Life cover FNB

I took a life cover with fnb the first debit run on the March and I was double debited,i called the isurance department I spoke Nkateko she said she has to get authorization from the manager she will get back to me,she did not on the 1March again went to protea branch the consultant and called the insurance department I spoke to Harvey he promised that they will reverse the other amount wiyhin 24hours .Yesterday I called the said it appears on the system they still waiting for the manager to authorise still waiting for authorise.Im not happy at all this is a new account which I have switched my salary already I have bad experience.