Utter incompetence affecting my ability to get a home loan

This is my 3rd complaint and still my issue has not been resolved. I had a vodacom account that went into arrears because i lost my job but i paid the account up. Its been 2 months later and the account is still listed as a default on the credit bureaus. This is affecting my ability to get a home loan. A month ago i got a call from a manager who promised to have this resolved asap. Yet nothing has been done. They are all completely ***********. And they do not care