Bad Credit score

I've been a vodacom customer for more than 5 years, i had two contract with them and always paid them in full.<br> Four months my account was in arears and they cancelled my account and there legal department contacted me. I paid the account in full 2015/04/28. Vodacom made my credit score so bad that i cant apply for any credit now. Why do i need to be punished with such a bad rating after i paid the amount in full?? the best part off it all is that Today 2015/09/10 when i phoned VVM Vodacoms legal department regarding my bad credit score they realized that vodacom has not updated that i have paid up the account and is still reporting that im a bad payer,<br> <br> i want this bad credit rating of my name from vodacom, I always paid you guys on time, unfortunately i had death in my family and could not pay it, but when i was contacted by the legal department i did pay in full directly the full account. Can someone from vodacom please help me, i have been phoning and nobody can help me and they keep putting me through to other lines, I've been on the phone for more than 20 hours already.