Vodacom the worst ISP ever.

I recently got vodacom openserve fibre… They are the absolute worst. I only have internet for a few hours a day! It keeps cutting for long periods of time. I phone and complain every day and nothing is being done. They keep saying openserve will contact me and they are working on it but nothing is changing. In the little time it is working they aren’t giving me the speed I’m paying for! According to openserve I have a 25mbps line but I’m paying for 100 with vodacom. Absolutely pathetic from both parties.