Internet hacking

On May 6 2018 my Vodacom sim card was "sim swopped" for the second month in a row and my bank account was hacked and a LARGE amount was withdrawn from my cheque account. I phoned the helpline to block my accounts and internet banking and got a case number. A guy from Nedbank flew down from Gauteng to clone my hard drive and the investigation got underway. Since then I found out that a guy with the name of Mpho Moleti is the investigating officer working on the case. He’s telephone number is ********** 351 but I can’t get hold of him. Heidi Jansen from Nedbank Langeberg Mall in Mosselbaai is my banker. Last thing she told me was to phone the girl at the help desk at the Stilbaai branch to ask for help with the case ! It’s been more that 2 months now and no one is able to help me. I need my money back. I’ve got things to pay etc but no one seems to give a damn! Please can someone help me? No one can tell me what's going on, if and when I will get my money back etc etc...… Never in my life have I experienced service like this!