pathetic service

Im having a pathetic service from telkom again, i spent the whole of last week phoning them sitting on the phone for almost an hour and then gave up, listening to there stupid music. My internet line is slow, at times it takes very long for pages to load and at times its intermittent. When the modem is switched on then it takes up to 3 - 4 hrs for me to have access to the internet again. What the hell am i paying for.A call centre agent phoned me last week selling a 4 meg line and 20gig space but it has not materialised. Someone phoned me last week stating that i will receive a R200 discount will the previous fault i was having since November 2014, i told her about the new agreement and she says there is no record of them upgrading me to a 4 meg line at the cost of what im paying now, i require this sorted out asap and to get what i am paying for, contactable on cell ***, landline ***, thnx Mr N Prag