Appalling service

When I went to upgrade my tablet, I was told that there was an account with vodacom's legal department and couldnt upgrade as a result. I have had my current number with Vodacom for almost 20 years and have had quite a few upgrades over the lifetime of my contract. So I was to say just a little confused!!!!! I called up Vodacom's legal department and spoke to a very nice lady. She informed me that the account they had was from 1997. ***??!! So I asked what the number was of this account - they could not give me a number and could only give me an account number with an outstanding amount. Apparently this account had been written off too. I explained to her that I had never had another account with vodacom. She explained that I would have to submit an affidavit confirming this and then they would have a look into it. I then asked if I could speak to her manager - Pravishnee Kella. And believe me it took alot of *****ing and moaning to get her name which was apparently top secret. Pravishnee like the ***ard she is refused to speak to me even after I said I would report her. Disgusting customer service from the company and those who represent it! AGAIN! Service provider change!!!!!