Worst service ever

my Telkom WiFi has been down so many times since i got it install recently my WiFi has been down since 22 September 2017 and its still down today 10 October 2017 the technician was to call me this morning and im still waiting for them to call me. i have not once complain about paying for my account in full even though the WiFi was not working a few days and i still got charged for it however now its 3 weeks this is going on for and i had to call the billing centre to make sure they credit my account I HAD TO CALL FOR THEM TO CREDIT. the amount of money i spent calling Telkom to follow up on the problem and the amount of data i had to buy for my cellphone cause my WiFi is not working is crazy im waste more money than what i did before i got WiFi. i cancelled my cellphone contract with Vodacom to open a contract with telkom and i now realise after more than a year that I've made the biggest mistake ever.