Synchrony Financial Credit Card Complaint

Synchrony Financial Credit card department,

Advertising and marketing Minnesota

Hi, I signed up for this account under a promotional offer where if I spent $140.00 on electronics purchases I would receive a $75.00 Gift Card to Walmart. I have called them over a dozen times and they have each time verify that I should have received it already and have told me I would receive it soon, just be patient. But it 's been over 4 months now and I still have not received my sign up bonus of the $75.00 Gift Card. My first order and the qualifying order number : -