Why do I get lied to so often by Xfinity??

I signed up three lines to Premium Unlimited to take advantage of your "pay off your device" and the trade-in promotion you had in July for Pixel phones. I did it at an Xfinity Store (Cedar HIlls in Beaverton, OR). During the process of signing up, I had to cancel my prior phone service to start the porting over. Only after that was I told that the Pixel phones I wanted were actually out-of-stock (lie #1 - or at least incompetence that I have to carry the financial burden of myself). I wouldn't be able to take advantage of the trade-in deal that day - but "no problem" you said, you can do it online tonight or tomorrow or you can check a different location to see if they have anything in stock. This was lie #2 - the trade-in deal was only valid at the exact moment of sign up. If I didn't get it then and there (which I couldn't, because they were out of stock) I learned I had to wait 60 days before I was eligible for a Premium Unlimited deal. Ok fine, I wait 60 days. Now the trade-in value of the three phones I have to trade-in (Pixel 8a) has dropped by $200 *each*, presumably because the Pixel 10 has come out. So thanks for that, btw, I'm another $600 in the hole thanks to your lies. I go into an Xfinity location to 65 days after signing up and now am told that even the "60 days" was a lie (lie #3) and that it is actually 2 billing cycles. But I have received two bills I say, and am signed up for autopay (and have excellent credit). No, no, I'm told that they need to see two completed autopayments. I can't even pay the second bill off immediately and have that count. You don't trust me somehow - even though I am not the one that keeps lying. Thanks again for that.

Also, I was told that to get Xfinity to pay off my phone, all I would need to do is submit my final bill from my prior provider (Google Fi) showing the outstanding balance on my existing phones. I wait until I get my final bill, I submit it through the Xfinity tool and it gets rejected because the formatting of the Google Fi bill is not sufficiently formatted/itemized (lie #4 - that Xfinity would honor my final bill if I just followed all the steps). Google Fi will not issue me any other sort of bill, so now I am stuck paying that off too - another $600 (to their credit, a different local Xfinity location is trying to help me with a workaround on this since you animals are intransigent). Again, thank you for being the absolute worst company to interact with in every way. I hate you thoroughly and feel scammed and cheated in almost every interaction I have with you.

Sincerely,

-mark