Terrible Service

We ordered fibre from Cell C in the beginning of February after being made a million promises by the salesman. After approximately 3 weeks the installation team from SADV came to install the line and sent off all related documents to Cell C in order for them to deliver the router. After a few days of no communication I contacted Cell C only to find out they had no recollection of the order. After finally getting hold of the salesman, Darryn, and threatening to cancel the order, my router was finally delivered. I then started experiencing extreme ping spikes from 3ms to 480ms to local google servers a week after the line was installed. I waited a few days to make sure it wasn't a once off occurrence but this issue continued every day. I called the technical department for help and I was told they cannot find any information on their systems regarding my account or fibre line and as such they cannot provide support but would open a ticket. This was last week Wednesday. It is nearly a week later and I have had no response whatsoever and no improvement in my connection. After contacting them again today I was told the ticket is open and has been assigned but nothing has been done yet. I'm told that all they can do label it as critical.