Line disconnected

My MTN contract had expired in October 2014 and did not renew it but asked for it to be transferred to pre-paid as I was out of the country. Since then I did not make the payments BUT was still charged for the package and Device that is already paid for. My line was disconnected and was asked to make a payment of R2600 which I did on the 18th of March 2015. I asked why I am being billed so much and why MTN is still charging me for a device, the response was- make this payment first and then we can re-imburse you. This was told to me by a lady at the Morningside Branch which I have the receipt for, and was guaranteed my line would be re-connected within 24 Hours. It is now the 27th of March and still my line has not been connected. I have contacted the 808 customer care number at least every 2 hours every day from a separate number and NO ONE answers. I have emailed MTN with no response either. MTN is very quick to respond when they don't get their money but when service is needed, they are never around!! Extremely frustrating!!