I did not receive my trad in credit, even after one year I got new phones from ATT waited four 3 billing cycles

Hi @Prasa_Jay,

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Gary, AT&T Community Specialist.

What do you mean you traded in through the Costco kiosk? Costco is not AT&T. It's an authorized retailer. In order to complete the trade-in of your phone you would have had to mail it to Assurant Mobile with a prepaid mailing label which tied the trade-in back to your account. Does that ring a bell?

Did you also have the required unlimited data plan? And meet all of the other requirements?

Yes, I have mailed them in ATT-provided USPS pre-labeled shipping boxes. All four iPhone 11 were mailed. However, I received trade-in credit for three phones only. I called Costco VIP phoneline tier 2 customer service. Every time, the Tiere 2 Customer support team asked me to wait for 2-3 billing cycles and create a new case number after the third billing cycle. ATT Tiere 2 Customer support team has created four different case numbers so far.

I have met all requirements,  I have an unlimited plan, and Never changed the plan. Every time Tiere 2 Customer support team says $800 lum sum will credit to my account, never happened. I don't have any trust with AT &T customer service

Did you take the packages to your local post office, and get a receipt as proof that the packages were mailed?

Did you track the packages? 

Yes, Bro Did everything and tracked packages were deliveered

Finally I received $ 800 credited to my account, 

Called ATT customer service roughly 50 times to solved this issue

finally, I got it'