Cell C - Fibre

I have been battling for two months now with Cell C Fibre I am payning for a 100/100mb Fibre Uncapped line and I never get the speeds they are offering me. Calls and screenshots have been going aroud back and forth but it is still not sorted - Call Centre is a nightmare to get hold of and when they log a ticket it get resolved rhe next day without them calling me? Bad and unprofessionals