Citibank Complaint

I signed up for a savings and checking account with Citibank for a $400 bonus and put down $15,000. They wanted copies of previous credit card statements, so I faxed them in. I called in to confirm that they had them and they said that they had them and would process them by April 22. I called them on April 25 and found out that rather than pay out the bonus, they closed my account.