How to deal with such problem:

Make sure you have checked in both the banks with the right persons. Qatar Central Bank helps in solving such cases. But before you should have made all efforts with your bank. Have all your correspondence documents with bank (complaint copy) with you incase needed in future.

Now Goto the QCB website: http://www.qcb.gov.qa/English/ConsumerRelations/Pages/Overview.aspx
and write your complaint.