Battling to get info on my account where telnr wer

Took out new contract with Vodacom June 2014. Lost my job and only place where I could be helped was America. Post Office striked last couple of months in 2014 whilst i was already in America (Oct 2014). First communication my account which was in arrears was end January 2015 (my parents receive Demand for Payment) My parents paid amount in arrears and from end February 2015 a monthly instalment as per my contract R1020/month. They received confirmation after they approached Vodacom about my old number which they found out was allocated to a new customer as well as my account nr in September 2014 already. A Vodacom cutomer care person of which we received a return e mail, stated clearly that I will be credited in full as well as a new number ect when back in SA. I came back December 2015,approached Vodacomshop Villagemall branch, talking to Farai and she could not find any trace of myself,my cellnr or account. When asking where all my payment records are no trace again. Numerous e-mails and telephone call delivered no response from any of the Vodacom customer care officials thus far. All payment records on bank statements where give to Farai but up to today no reponse, no feedback