Trade in fraud

We have started the service with Xfinity for thanksgiving deal .

we had some issues in porting our numbers from different carrier and store person created two orders and said he will work with customer service for one free line offer .

one free line with home internet and two trade in iPhone 13 pro at store.

The store person gave 1400$ trade in value after he inspected the phones .

after few days we received the bill without one  free line offer and I have called in for asking about it , but Xfinity customer representative changed price plan and gave some discounts and from 3rd month I saw I am not getting trade in advantages .

every month I called them and asked about it and they create some support ticket and don’t resolve your issue .

upon calling multiple times in May they said I need another plan and I said ok for it , now they are even charging more .

after I called them again and talked with supervisor and corporate office they are saying I have changed the price plans twice , so they cannot add trade in and they don’t return my devices .

they are purposefully changing plans , I never called them to change price plan . I always asked for one free line and trade in offer .

they are changing the price plans and asked my consent .No one is listening to me why I will lose 1400$ of my trade in value and change plans and pay more .

i have even asked to give me my consented prints where I said I don’t need trade in .They don’t have one . It’s been 15 days corporate office didn’t solve my issue .

and one of my device is not showing as trade in at all . They gambled something and throwing the mistakes on me .

they are very rude and I guess these are all pre-planned to cheat customers .