Unacceptable waiting period

Hi. I app**** for a personal loan in February this year, I got it with no issues, I went to all companies I had accounts with to settle all amounts owing, I was told all my accounts were open and paid in full . A few months ago I app**** for another loan with the same bank it was declined due to a adverse listing on my credit report I called compuscan and was told it was an old foschini account the only account reflecting on my credit report I settled the account within a day although I was never informed my account was handed over. I waited for over a month for my credit report to be updated and tried to apply again for a loan yet again I was told I have a adverse listing called compuscan again I was told it was cellc it had never been foschini from the start. I went in store (cellc) the service was pathetic and opted to call cellc after hours waiting while my call was placed on hold the operator transferred me to legal department I was told my account was handed over to edc Blake, I called edc Blake and was told the account was with them but was sent back to cellc. I called cellc again waited for hours again and was told my account was paid up. Now I called compuscan and explained the whole situation and was told to dispute this matter so the adverse listing can be removed from my credit report. I want my credit score to be updated asap as I have made numerous attempts to clear my credit report and just get pathetic service.