Incorrectly handed over and no feedback

Its been 2 months since a dispute between myself and MTN started. I supp**** letter from store acknowledging that I did not take any goods on my account. The attorney's have handed the account back to MTN and on 4 August MTN legal said an internal ***** investigation is underway. Its been over a month now and I have had no response from them while during this time my credit report is negatively affected. Why should my life ve disrupted due to an internal investigation. I supp**** the necessary proof to clear my name.