Bad Business!!!

I moved on 5/30. On 5/27 I called XFINITY to let them know to transfer services effective 5/30. They said they could transfer it 5/30 (stop billing old address) but a technician couldn’t come out to the new address until 6/2. I said that was fine. My bill is regularly $73. After the technician left. I received an email saying transfer complete and bill will be $112.xx (monthly bill plus activation fee). I get on the app to see my bill is $175.xx. It has included a monthly bill, activation fee, and a transfer balance of $63. I called in for them to make the correction because they double billed me. But the customer representative as well as a manager named David employee #[Edited: "Personal Information"], informed me that the $63 was a “prorated amount” from my old address billing cycle of 5/28-6/27 but when I changed address the billing cycle billed on the 6/2 so it’s because of the timing of move. HUH???? $63 pro rated amount for 5/28-5/30? How is that possible! And once I wouldn’t take that for an answer, the manager brings up the fact that I’m on a payment plan. How demeaning! He said it’s because if you transfer services then the amount that you were on a payment plan for is due immediately. He never said this before! He was fighting me that it was for my old address said nothing about an installment plan. The installment plan doesn’t even equal up to the amount of $63. I was only on an installment plan because XFINITY turned my internet off after giving me an extension but saying the CS rep did not process it correctly so I had to pay $50 for you to reconnect it! And ended up having to file an FCC complaint to get you to make it right which you granted me an installment plan of $5.38 added to each of my bills in order to pay off the bill from that instance! Shame on you XFINITY! Make this right or I am going back to FCC!!!