frustrating with chat agents

I am happy with the internet and price from xfinity but I had so many issues when dealing with agents that I am scared to ask them to change anything from now on.

First incident that the agents created a new account when I requested for unlimited data and a new account was created. Because of auto-pay, I ended up paying two services (old and new ) at the same address for 6 months and didn't get refund. (partially my fault for not checking)

Second incident was when I asked the agent to move the service to a new address for my father-in-law. The agent moved my service to the new address as a new account ( new plan, new cost).

Then I chatted with anoher agent to correct the address and the original internet plan. Yet another account was created, and the agent offered me a mobile bundle to lower the total cost. I hesitated but the agent confirmed this is a good deal at no additional cost after the bundle saving ( mobile + internet) so I took it. Then I didn't feel right and called and called the billing department and they confirmed that's not true and I would pay much more for both. I ended up returning the iPad with stocking fee.

So you can see I have 3-4 accounts linked under my name and the CS at the store  where i returned the Ipad threatened me for having too many accounts like I was cheating.

At the results, my account was mixed up and my in-law service is still stuck at the old address.