Level-7 Breach of contract and no one cares

Eventhough level 7's word of mouth was great their service and internet speed is poor, I am paying R1500 for a 10mb line uncapped unshaped with priority. I had issues with them since day 1, i emailed them multiple times and no one responded back to me. after i threatend to terminate my contract then all of a sudden someone phoned me to see what my issues were. They arranged a date and time to see if we can sort out the issues, made the plans but no one phoned, no one helped me ... no one showed up. a few days pased I got another email telling me to do things on my side to test. The following day closed the ticket as they and not following up at all. Level-7 is breaking contract as they are not giving any service what we are paying a ****load for