Is it an inside job,since no one is helping me out

This is so strange and it doesn't make sense to me all. On the 16th of April 2015, I received a lumpsum into my account. This was a new account that I had opened for that purpose as I did not have an account at all. Two days later after receiving that money R 4900 was withdrawn from my account(18/04/2015). On the 20th of April 2015,another R 5300 in total was used (R2500 X2 used at pnp Westville and R300 cash withdrawal. When I noted this I went to Hammersdale Mall branch and I was told that they cant see anything on the statement. As I was not convinced with that response, I then went to Pinecity branch, where I was told the money had been withdrawn. I told them that I did not withdraw those amounts. They then changed my card which was in my possession and asked that I filled in the forms so that they can investigate and refund the money back into my account. Since that time, I have been waiting for my money and no one has bothered to give me feedback. When all this has been sorted out may I PLEASE move my funds to another bank without any penalties on my investment. I don't want ANYTHING to do with Nedbank. They are taking chances