Telkom keeps dropping my calls

I have been a very happy customer of Telkom mobile for many years now and this year i am just finding more and more problems. I keep getting dropped calls from landlines. even Telkom has tried to phone me like 10 times over the last few days to help me upgrade my contract. and before i even finishing saying hello the calls drops and i don't get phoned back for some time.i can't even find a place online to log a fault. Even in the shop they couldn't tell me why i am getting dropped calls. please can we get it together guys?