No response from Telkom

I have for the last few weeks been complaining about my 20mbps line that keeps losing internet connection. This week so far I have gone three times. Sunday from 9pm till the next morning. Last night at midnight and then again this morning. Everytime the speedtest can see your servers, connect and I get favourable speed test results. However, I cant access any internet site and my connection says \NO INTERNET\". Sometimes rebooting the router works and this has to be done numerous times during the day and sometimes it doesnt and I just sit and wait until it eventually comes right. I cant watch a netflix/showmax movie due to this issue. I have complained on Facebook many times and I get a \"We sorry we will get back to you\" and then nothing happens. Furthermore, a month ago Telkom phoned me to give a free D-link portable modem with a sim card linked to my fibre data.....well I am still waiting for this. I am sick to death of paying for a service that is unreliable and for staff you just cant give a damn. Sort this ******* out."