Let’s say I purchase a phone from Verizon worth 700 on a promotional plan, so I get a $20 credit per month to pay for the phone. I purchased it at Costco, so the return period is 90 days rather than the usual 30. If I return it after 89 days, I get my sales tax back, but what happens to the accrued device credits? If there were 3 credits, do I then have a 60 credit after the return?
