Added to Credit Bureau Listing

I cancelled my contract with Vodacom, had to sign several forms and obviously had to be paid up. One year later when applying for a loan, my bank advises me that Vodacom has added me to the Credit Bureau for bad credit, or an alleged outstanding amount. Never did Vodacom advise me or explained what the amount was or why it was outstanding. Now trying to contact them to find out the amount and cause is almost impossible, every response is from a different agent with no return call number. I am overseas and all the toll free numbers do not work from Abroad.<br> Terrible, poor, ********* service!!!!