Customer service issues

Upon checking my bill and payments I’ve noticed that my bill has changed. I was paying $85 a month for my internet starting (3/2023). I was told that the equipment Xfinity sent and installed was not the right equipment for my internet and they would send me a new wifi router free of charge. Once I received the package (took a very long time) my app would not allow me to start and activate the router. I called Xfinity and the customer service representative (woman) said she could assist for a small $25 service fee. (Even though it says it’s free online) she then helped activate the equipment and stated “the bill will be $104 for just this one time only”. it has now been 3 months and it has not gotten back to $85 when I called Xfinity (9/10/23) I was told I had a promotion (that’s supposed to last a year -2 years) and it expired even though I’ve had it for only 5 months. They also notified me that there was extra equipment added to my account and they upgraded my internet without notifying me of the upgrade, the equipment, extra charges. I want to file a complaint to the woman that lied and changed my account without notifying me. She charged me for things that I did not agree to and lied multiple times on the phone. I would like to thank Irel (customer service representative) for his help in finding out this information and trying to find the issue. He deserves a promotion!