Can I get support from someone who can actually help me and not make things worse?

I am moving on Saturday 5/20 and wanted to setup my service transfer ahead of time so when I do move I could easily plug in my modem to the new location and have my internet back up as soon as possible. With this being said I want to have my internet service run in my current location until I do move. I started to do the transfer by myself but it seemed like the new modem that I would need was going to be shipped to my future address but since I haven't moved there yet I didn't want that and would rather have it shipped to my current address so I have it with me when I move. I then reach out to an agent thru the Xfinity chat to have some assistance on this. After working with this agent I am told that the shipping address can be changed to my current address so we move forward with setting up the transfer. I am told I will have a new account number for my new location but as I am reviewing things I notice the address for my new location wasn't entered correctly actually was a completely different address in a different state. I notify the agent of this mistake which is then quickly fixed. Then yesterday (Tuesday 5/16) I get a shipping notification for my new modem but realize that my unit number on my address wasn't included in the shipping address. I then reach out to another agent thru Xfinity chat about this because I am worried that I won't actually receive this package since the address doesn't have my shipping number. This new agent then tells me that I don't even need the new modem and can actually just move my current one with me to the new location. I am then told that the shipping of the new modem will be canceled since I won't need it and that I will be setup with a transfer with my current modem. I liked this plan and agreed to move forward with it. Fast forward to yesterday afternoon and I get a notification that the new modem that I now don't need was delivered to somewhere in my current apartment building. I was able to find the package (so missing unit number didn't end up being an issue) but was not a fan of receiving this because this means I now need to take an extra trip to return something that I didn't need. Shortly after that my internet goes out. I try to fix it myself but realize when trying to connect to my modem that I am getting a "Welcome to Xfinity, please download the Xfinity app to activate your service". This is concerning to me and I am worried that my service was turned off too early (even though I was clear about 5/20 being my move day) so I then reach out to customer service again. While discussing the issue via Xfinity chat with another agent I am told that my service only shows a "pending disconnect" and that I just need to activate my modem thru the Xfinity app. When I open the app though it doesn't give me any option of activating and eventually doesn't even load anything on the home page. I then reach out via phone to another Xfinity agent hoping that talking this out will work better than the chat. On the phone it is found out that the agent who transferred my service with my current modem changed the address of usage of that modem to my new address already so my current modem won't work in my current address. So to try to fix this the agent tells me that I can connect the new modem that I received to my current address and have that provide me internet access until I move. After going thru the steps to do this it is realized that this new modem does not have a fiber optics port so this modem cannot be used in my current location. The agent then tries to switch my old modem back to my current address but cannot and I am told that I would have to wait until today because the Movers group was closed at the time I had called. I was able to setup a call back time for later this afternoon when I am back home from work and that this agent will work with the Movers group beforehand.

The main reason I making this post though is can I get some extra help on this to not only make sure I can have my internet turned back on in my current address but also make sure that when I move on the 20th that whatever modem I am told to hook up actually works? I don't believe what I have tried to have setup should be a difficult task and that hasn't been the case so far after working with multiple agents. Maybe when I get the call back today things will work out but I am somewhat confident that I will need to call customer service again either on this or when I try to connect at my new location.

So now I have an extra account number with an incorrect address in another state, no internet in my current location (was also just charged via auto-pay yesterday so paying for something that doesn't work), an extra modem that should have had the shipping canceled that I will have to return, and no clue if my transfer will even work when I go to setup a modem at the new location.