Discover Bank Account Or Service Complaint

Discover Bank account or service department,

Savings account Account opening, closing, or management California

I opened an discover bank saving account with a promotion code of -. The promotion is $100.00 bonus when I make $15000.00 deposit by - -, 2015. I did make enough deposit by that deadline. However, months passed, but there is no bonus awarded. I contacted Discover bank several times, they always say they will check it and it would take more than one month to give me feedback.