Bad Vodacom fibre after sales service

No after sales service, complained numerous times on bad data speeds. Renting 100mb/s fibre line, spend over R5500 in three months, and my downloads pauses, streaming is a shlep...send print screens then my tickets get closed without fixing my problem....logged numerous calls, empty promises of technicians that will come to my house... Speeds drop major from as much as 4meters away from the router...sometimes my speeds are less than 0 mb/s?? But I am billed every month...if I didn't know better I would have thought I was ****med.