Verizon BYOD Bait and Switch

Here’s a great story for you. I was told by Verizon that if I brought my own device that I was eligible for a $500 rebate e-gift card. I did everything they asked I kept my device active for 45 days as the promotion states and I never canceled my service. Yet they have determined that because I canceled my line I was no longer eligible for the rebate so they have now charged me $500 which I can’t afford because I am on disability. Yet in the details of the promotion it says service not line. If this isn’t bait and switch I don’t know what is.