MTN Vredendal - IM WAITING!!

Its been 3 months since ive sent in my new Samsung Galaxy S8 phone for repairs at Vredendal MTN branch. Everytime i call them, they keep telling me that Samsung will send me a sms with the amount and banking details which got to be paid upfront before they start repairing. Well, till today, i havent received any respond from a Samsung Centre and neither does MTN Vredendal respond to my calls. Ive called them several times regarding this and they only keep telling me that they will check up on this and phone me back (which NEVER happened till date). I pay for full service fees EVERY month for my new contract and S8 Galaxy, but have to make use of one of my previous phones and dont get to use ANY BENIFIT of the new contract! MTN VREDENDAL, I'M STILL WAITING!!