Citibank Bank Account Or Service Complaint

Citibank Bank account or service department,

Checking account Problems caused by my funds being low Arizona

Please refer to this Case number : - and -. Completed Form - was sent on -/-/- by usps postal mail. Anyway they had my SSN and all the details from -/-/- so not having - with SSN is a mere excuse. Now they are sending letter for collections even when i was never sent the statements in the past ( got it after opening the last CFPB case ). The current letter is regarding overdraft charges which are also incorrect. I just want to close this inconvenient account and have my $400.00 promotional cash back.