Unprofessional, rude service

Absolutely appalled by the service levels shown by this company. I had purchased a TV from Hi Fi Corp only to have it stop powering on after a few months of ownership, got to the store and was informed that I had to book it in as they had to get technicians to site to view the tv since its larger then 50". Little did I know that Hi Fi Corp outsource this kind of work to Master Audio Visual Umgeni. They had attempted to call me once in the past month which was on a Saturday and I was busy at the time. They never called back to confirm a booking and after a month and me chasing up on the issue have they booked the callout. The lady that I spoke to at Master Audio Visual Umgeni was very rude and certainly not trained to speak to customers. So a month without the TV and not sure how much longer a repair would take. Very disappointed.