Bad Service

I am currently applying for a home loan. When checking my ITC Report, it shows that I have an installment of R1157 with Vodacom. The account i had with Vodacom ended in Oct 2015. I then carried on with the account with a Top Up Package where I only pay R85 for 1Gig Data per month. R1157 is the last payment I made to Vodacom on 28 Oct 2015 before going onto the R85 Top Up Package. This R1157 installment that reflects on my ITC Report is causing me not to qualify for the bond I am applying for. The consultant at the finance company i'm applying for the bond at advised me that Vodacom should provide a letter that proves that I am no longer paying this installment amount of R1157.00, and that I'm now only on an R85 Top Up package with Vodacom. Since yesterday, 17 Nov 2015, I have been in contact with Vodacom's Legal, Accounts and Cancellations Contact Centers to ask for this letter. Since then up until today, 18 Nov 2015, I have been taken back and forth by these people with no satisfaction. All i need is one letter from Vodacom that proves that I no longer have a R1157 monthly installment with them. I canceled my account completely today hoping that it will get me this letter I need.