Really Bad Service

MAKRO MONTAGUE GARDENS - I've been e-mailing Hisense and calling them for months. I then eventually took my faulty tv in to Makro Cape Gate. They did not take my tv but instead sent the Hisense technician to my house to collect tv for repair. Three days later he got back with tv and a letter from Hisense with a pre-approval claim number for a swop/refund as no parts are available. I then took the tv and letter to Montague Gardens for my refund as this is the store where I bought it from. They took my tv and gave me an Assessment Print Out Document, sent me a checked in sms and said I'll get another sms message within 48hrs with approval number for my refund which I should then just take in to Makro Montague for my refund. It's been a week now and I'm not getting any answers. I want my refund so I can replace my tv. Calling is useless. They keep promising to call back and don't. I've also driven out to the store twice and am promised to be called back, but no call yet. I am still without a tv and there is nobody that seems to know what's happening. It's beyond frustrating.