28k payment not reversed after returning a device 2 months ago!!!!

Telkom Telkomsa and Telkom Express - Pavilion

If it was possible to give 0 stars I would. I am appalled at the pathetic customer service received by the Pavillion Mall Store in durban. Being a loyal Telkom customer of over 20 years I've decided to take my business elsewhere after the following. On the 24th of September we went into the store and took up a device based on the sales person recommendation. Upon using the device it was evident that it could not fulfill the intended purpose for purchasing. Eventually a refund was approved based on the CPA. It has now been 2 months.... The device was returned..... However it reflects that we now owe Telkom over R28000 according to an invoice. My wife's line was blocked(the wrong line even). This is still to be rectified. We have to contstantly call the store for feedback nobody checks in with us or keeps us updated. Apparently there was an issue with dispatch. So how is this now our problem? I am just concerned that they will now try to take this money from my wife's account leaving us and our 2 kids in the dark over this festive period. All I can say..... Shame on you telkom. I have been loyal defending this brand over the last 20 years and you have let us down..... Pathetic is the only word I can now use to associate with you.....