Vodacom is standing in between my success!

I am so saddened by the quality of service I am receiving from Vodacom. I closed my account in 2016/17 but my Transunion report still shows as if I am having an open account with vodacom. I have been calling them since the beginning of October for a settlement letter! I am applying for a bond and the banks will not approve until I give them this letter! I have been sent from pillar to post and been told to wait for 48 hours and 30 days have passed already no letter! I currently do not have vodacom therefore I call with my own airtime and this is frustrating because sometimes I get through with luck, other times I just get transferred from one person to another!! My development and improvement in life and depended on this letter and Vodacom is nowhere to be found but I don’t owe them nothing!!!!!!