bad after sales service

I bought a new Samsung TV in December and unfortunately am unable to get service from Customer Service in Johannesburg. I calll them and they try and help over the phone but if they solve one problem another occurs. Today I have been trying to get anyone to call me back - I was on the phone for one and a half hours with Samsung. It is impossible to try and do things over the phone. Why don't Samsung rather get their agents to call personally as my TV is still under warranty. My internet is not very reliable so am unable to connect. This is extremely frustrating. Today I have called three times waiting for a return call but they just dont care! When I dealt with a problem with another company they gave excellent after sales service SAMSUNG need to put their customers first.