Cellphone Contracts

Good day,I'm writing on behalf of my dad,SJ Malinga whose being a loyal customer at Vodacom in Newastle Mall for many years.hes been receiving phone calls stating that he is in areas and sometimes suspend his line.We visited the shop several times and they promise that they will look at the matter.but the problem is never solved.we again went back to them explained that not once he (My father) skipped any payments,well they went through his account and saw that he is up to date.they found out that someone took a contracts using his details 2 years ago,he was asked to do affidavits and copy of his I'd so they will send to a ***** department.We did that 27 January 2017 and Vodacom promised that they will resolve the issue but to date nothing had happened.as I'm speaking to you right now he just received a call from Vodacom stating that he must settle his account because they will suspend his line.please I'm pleading with you can u help my father because if this matter is not resolved he will take steps.You more than welcome to contact me as I'm the one who is responsible for his payments and the one who always attend to the matter.And I have the documents and dates of when it was sent.