Cancelled Contract - no notice

My contract was cancelled and ported over to prepaid on 27/28 July 2015, without my consent. Of which I lost all my minutes, SMS's and Data (approx 1.4GB). I then loaded airtime and purchased data bundles. <br> <br> On 13/08/2015 the number was ported to contract, again, without my consent. Of which I lost all the airtime and data that I had purchased. I have complained before, but this fell on deaf ears and \promises"that the matter was being investigated and someone will contact me.<br> <br> I have been trying to cancel my contract"