Slow or no Speed on Wifi Contract

Dear Telkom I am 17 Months into my Wi Fi Data Contract. Until 10 Days ago I had no complaints. My Data speeds have crashed with no service at various times. Dialed 180.. Not Helpfull.. Used Facebook platform.. Not Solved. I pay for a Service that I am NOT recieving. Also why should us customers report poor Wi Fi Speeds. Surely you as the Network Provider should know what your Network coverage and speeds are .. You Provide them.. Kindly Contact me on the Number provided. Regards