All my funds are gone

On the the 3rd November 2017, apparently someone transferred money into my account by mistake, I recieved an sms of the funds in my account, when I login the app the funds were not there, just my original amount. Then on the 9th I received a sms that that certain amount has been reversed from my account due to incorrect transfer. After that sms my balance immediately went to 0.00. I immediately called the bank, went to the branch, and continuously calling the bank for feedback, but I have been getting one answer that an enquiry has been sent about my balance they waiting for response. I've been waiting since the 9th. My money is not back into my account.