Horrible service!!!

I paid up my loan account in January. In the first week of February I received my paid-up letter and a promise that my details would be updated on all credit bureaux within 7 working days...Over a month after receiving confirmation of receipt of my payment, my details have still not been updated on Transunion. This is totally unacceptable, because it's messing up my credit rating! I have called Capitec countless times and sent numerous emails trying to resolve this issue, in the past few weeks, to no avail! This is totally unacceptable...