paid debt

i had and account with Vodacom that was in arrears, I paid off the account in January for my surprise I just realized a 3 weeks ago that my debt was never updated, I called they referred me to their legal department whereby even today I am being taken from pillar to post, I went back to Vodacom at boulders and I was told that they can't help me, I must keep on trying their legal department, please help, I need this debt off my shoulders