Poor service provided

I took an home adsl contract with telkom. For the past 5 days I've been having a problem where I cannot connect to the internet. I spoke to 2 consults but non of them could help me, I was told a technician would give me a call but no one called. I work hard for my money and it is disappointing that telkom cannot even get back to me, after-all I have paid on time for the service. I actually feel like cancelling my contract with them as their service is poor.