4 Months and im still waiting for my refund

I had a contract with Nashua Mobile and when the closed they moved some of the accounts to Autopage, that where the night mare stated, I had not used my contract number since July 2014 because I lost the sim card during relocation. 5/11/14 I realise some one had got hold of my number and is using the line I immediately called the call Centre to report the matter, requested them to block the line and send me the itemised billing , I was then advice the matter will be referred to the special unit for investigation and that I will be refunded. Well to my surprised end of November amount over R1000 was deducted off my account, I tried calling the call Centre with no luck been on hold for more than 45 min then redirected from one agent to the other then I was told someone will call me back, December the same thing happen about R800,00 was deducted again, same in January I kept trying to get hold of the call centre still with no luck no help, eventually on the 3/2/15 I manage to get hold of Keneloe Tsotsotso who confirmed she can see on the system I made contact but my line was not blocked as requested, she will block it (4-02-2015) and refund, aft numerous email s to her no feedback.