Wanted info about number change due to spam. My number got changed 2 times no permission and now has no network connection

I enquired about the changing of my number due to lots of spam calls and scam messages. A representative told me to get some info and contact online help in the chat. My phone number got changed. I received an email saying it was changed. I contacted xfinity chat again to check on that. Seemed ok, I was fine with that.  Then 1 hr after I got another message saying thanks for updating my phone number and showed a new and different phone number. I had already consented to the 1st change without notibut a second change without me even calling for it. Its too much. I got with the chat service again because I had to wait 30 mn if I wanted someone in person on the phone. I requested to the chat agent to get the phone number back to the previous one (I had made updates in my personal accounts to that new number) he saud no problem, he will make the changes back.  He asked me to follow some steps for the sim information. The cellphone stopped working. No calls,  no network,  no Sim info. The person ended the chat conversation and transferred me to someone else. I had to chat- explain everything again for this person to try help me. He ended up transferring me again to a new person who at the end told me go to the store close to you because I can't help you. Guess what! I went to the store and was told by the costumer service person in a very condescending tone that they don't help people who get things messed up online. That only the person in the chat could help me or that i shouldgo the the corp store that is 1 hour away from my home and refusedtoeven look at the phone. So now, I have no phone, no connection,  no network. No one can help and a piece of plastic from which I am still paying. I called the costumer service number. A lady from who knows where kept asking me when was I going to pay for my bill because it will be due in a couple of days and that I will be disconnected if I didn't pay. Seriously! I asked for a manager, the woman put me on hold for 10 minutes then hanged up. So if you want to have no service, get pushed around, be harassed by when you will pay and have useless service. Sure go with Xfinity Comcast. They will make sure you are mistreated in every way until you never want to do business with them ever!