BAD SERVICE NO SERVICE

I have been trying to remove an account on my Credit Profile for 3 years now. It is a joint Bond from Standard Bank Homeloans from which I am not the owner anymore. Yesterday I phoned in again to try getting this off my name as it is affecting my affordability. The lines were ringing for more than 15 minutes and after I finaly spoke to an agent he told me to go into Standard Bank and tell them to remove me from ITC. This is not acceptable because I wanted to log yet another dispute but he told me I must sort it out with Standard Bank myself. I also Spoke to Transunion and they logged a dispute and this morning I saw that it is removed on my Transunion report. This is really unsatisfied service from Experian.