Citibank Bank Account Or Service Complaint

Citibank Bank account or service department,

Checking account Account opening, closing, or management Kansas

I signed up for a Citi checking account on -/-/2016. The account offered a $400.00 bonus if $15000.00 was deposited within 30 days of opening the account and then kept in the account for 30 consecutive calendar days. The bonus was to be paid within 90 days of successfully completing these requirements. I deposited $15000.00 into the account on -/-/2016 and no money was transferred out of the account until -/-/2016. As such the bonus should have been paid on -/-/2016 but I have not received it. I have had multiple communications with Citi ( email, online chat, and phone calls ). Each time they confirm that I 've met all of the criteria. They then proceed to open an " investigation '' which they claim will take no more than two days ( the last " investigation '' is currently 5 business days old, this has been similar for the others as well ). Two times ago after their investigation they said I needed to send in a form - to receive the bonus. I have now mailed this form in three different times, the last two times confirming the send-to address with Citi, but Citi tells me they have not received it. The reps I spoke to this time, however, assured me that this would NOT keep me from getting the bonus.