Poor Service

Why FNB dragging feet on refunding my money?? I was double debited on the 20 Dec and 21 Dec 2018..Everyone keeps on promising to escalate and call me back before 16:00 and that has never happened.Im very disappointed with the poor service and if this is not resolve or if Fnb doesnt need my services anymore then they can close my account and will bank with someone else.Ive spoken to Arnold, Khethiwe,Matevha,Marvin and Mojapeng who also promised to give me a call back and never did..I really regret why I accepted the loan offer because now Im double debited and its a problem to refund me.Yesterday I was on a call for approximately over 40 minutes and spoke to Nhlamulo who also promised that someone was working on my account and would be refunded but it never happen. So get the Finance Manager to call me ********** 937 a ********** 667 and process my refund since those consultants are failing to do the job