Vodacom fibre in Strand

I have reported a problem with my fiber on the 2nd of July and have been issued a Service request number and tried to get this problem resolved, as my wife needs internet access to work from home during this period. I have been told they are sorting it out but 18 days and still no joy..... I have stated that during this period if you don't work.. You don't get paid! I would like to cancel my contract as they can not expect me to pay for a service that is not available.