Worst treatment at Vodacom

I had a contract with Vodacom long time ago, I settled my account I still have proof till to date that it was settled, but they still send me statements that I'm owing them, I disputed several times, they even involved attorneys it's where I provided them with proof that it was fully paid. Then the attorneys I was dealing with sent me back to Vodacom they also advised me to send affidavit. I did all that and submitted the docs but I am still getting emails that I'm owing them, my score is ruined because of them. ***-2 I regret the day I signed up a contract with Vodacom. I went to branches different branches still no help. Over the phone its worse they just can't help me.