Terrible connection and no feedback

I signed up with vodacom on a contract basis for Wifi connection via a fiber connection since Jan 2024 paying R762.29 monthly. I am not having a good experience with them at all i hardly have any connection but they are happy to deduct successfully with no short payment. I have escalated the matter so many times and offered a reduced payment of R400 since around June to try compensate however this is still not enough as i a, not receiving the contract i signed up for, i don't think that's fair. I need this to be sorted without damaging my pockets any further, I immediately require feedback and constructing feedback. Cancellation is not an option as i have lost so much money and they have made profit, cancellation can be done under the conditions of a full refund since the start of the contract