Vodacom had my credit record tarnished due to incompetence on their part

My contract ended and I gave cancellation notice in March and April. I was still debited and one cannot get through to the customer care and if one goes to a branch, they refer you to the call centre. I am now sitting with a listing on my name and these idiots couldn’t give a damn. I am still trying to date, to no avail. If no response here, I will approach an attorney to file a lawsuit for deforestation.