***** COMPLAINT NOT Processed A Month later

Last month someone took a cellphone contract from Vodacom using my details. Money was debited on my account in February. I arleted Vodacom about this on the 13th February submitted all the documents they needed affidavit and other documents and I was told they are looking at the matter, I kept on doing a follow up and again I was told to give them time they are working on it. Today it's the 18 an amount of R7k, 401 was again debited from my account from vodacom same contract... I went to the same branch to inquire what happened now... It turns out the complaint was not processed on the 13th of February yet they kept on saying to me they are working on it... Lies I lost money again not just any money R7k.. I haven't received a call from Vodacom, I keep getting inboxes messages that they are working on it... What must I do for them to work on this case.. I am going end up blacklisted for something I do not know cause I closed the bank account their next debit order will bounce and will reflect badly on my credit score... I need Answers Vodacom!!!!!