Xfinity's Unfair Business Practices

I have been an Xfinity customer for over 15 years.  I recently purchased a new phone for my daughter and added a line through Xfinity.  I was given a price for the new service $13.75 per month and $15 for insurance.  I had to pay the first month's device payment and taxes at time of purchase which was $13.75 (1st month) and $45.62 (taxes).  I received my first bill this month which indicates $35.41  ($30.41) monthly payments ($5.00) insurance.  In addition, my bill indicated a $3.60 mobile care for another line that was not purchased.

When I called Billing to get this straightened out, I was offered a solution to this as follows:  An upgrade from an Apple Iphone 15 to a 16 and a smartwatch with no charges - all charges on Xfinity.  Sounded too good to be true to me but I allowed the salesperson to complete the transaction for the watch which, of course, was not completely free.  Taxes had to be paid which I consented too.  Then, the process for the upgraded Iphone 16.  This of course was not free either requiring taxes and another charge which would total $90+ and I was assured that $34 would be credited back to me once the Iphone 15 was returned.  At this disclosure, I questioned what about the monthly device charge on the current Iphone 15 would that be removed from my bill?  At this question, the salesperson said "No.  Once 50% of that amount owed was paid, I would be eligible for an upgrade."  What?  How is this solving my problem of the wrong price being charged?  After over 30 minutes of talking to this salesperson, I was told there was nothing that could be done.  Even though I have a receipt from Xfinity indicating the device payment I am supposed to pay for the phone.  The promotion I received was only for new customers bringing a number over from another carrier.  

This is not the way you treat loyal customers that have always paid their bill on time consistently and only want to pay what they owe.  It is more of a bait and switch tactic that would have gotten me in deeper financial obligation to Xfinity.  At this point, I am planning to take my business somewhere else where my loyalty will be appreciated.  BYE Xfinity!!!!