Intermitted Service or No Service

I have a 10Meg ADSL line and 50Gb capped package from Afrihost. Initially when the service started the service was excellent with no problems at all. As time went by the download speeds started to drop dramatically, if at times at all. I logged a support ticket with Afrihost which took me through several steps ranging from resetting the router, changing cables and them hinting I should change the router.....<br> I did the line check on their website which came back all positive indicating that the ADSL line is in perfectly working condition. Someone on their side then indicated that there seems to be no active ADSL connection on that side and also that I am getting the \lost carrier"on my side.<br> Now I am no Internet"