Dissapointed with Vodacom!

I am with Vodacom for about 15 years, in 2003 a family member asked me if he can take a cellphone contract out on my name with Vodacom. Unfortunately I did it, and did not realize that this person was not paying the account, until I was given over to the legal dept. I made arrangements with them, cancelled that specific contract and paid them off . About 3 months ago a sales person from Vodacom phoned me and asked me if I would like to upgrade to a tablet, which I said yes, I do need it, but it was then declined. I phoned the legal department at Vodacom, spoke to Israel, he cleared everything for me (he said he did), then last week another sales person from Vodacom phoned me again with the same special offer, I was declined again. I phoned the legal department again, they said they cant clear my name, and the lady I spoke to really had a bad attitude!! After 12 years they still keep a bad record of me although they let me upgrade to a new contract every two years? Cant wait for my current contract to expire, them I will cancel my contract with them!