Retention Department

I have been trying to port my number to prepaid. The first request was sent 10/12/2015. When I phoned 808 today I was told that no request has been sent. I want MTN to change the contract phone number to random interim number so that the number in question can be relived immediately (I know this can be done, confirmed by Vodacom and MTN call center supervisor). The call center gave me 6 numbers to call to arrange this, but none of the departments can help. I now have 2 fax numbers, the number for repairs department, porting department and a number for cancellations that does not exist. Nobody can give the number for the \retention department". MTN call center is horrible and the supervisors are also unable to assist. ***"""