I have had Cell C since February 2017- first at 20/20 but as this was totally useless for streaming, I upgraded to 50/50 last month. This has proved to be OK during the day but is also useless after 6pm., when it buffers a lot, freezing the screen and eventually it stops working altogether, ending with a message "problem with the internet" on a black screen. Sometimes it reboots itself going back to Google but it is always necessary to reboot the whole system. My TV, a Samsung UA55F8000, says in the handbook that it works down to 10Mbps., so we are obviously dropping below this level when it stops working. Speed tests to international sources are OK during the day, averaging round about 30/30 up and down but at night they drop down to well under 10/10. Vumatel has told me that the local speed to my address is very close to 50/50 at any time, so is it Cell C that has not got enough band width to accommodate client requirements. especially international band width? This my suspicion as they are almost impossible to get hold off and their help desk cannot help me. Does anyone have another theory? It could be the Samsung that has not got enough memory but it does work during the day, so this is unlikely. Please guys, I am desperate!