Afrihost's lack of customer satisfaction

I've been a customer of afrihost for the past 5 years now. Up until recently the service has been good. Except for the hiccups every two months... This time afrihost pushed it. They told me my router is at fault. So I got a new router. The same problem occurred. After a technician got sent out I was told the problem is fixed. It wasn't... I am an IT student and networking is one of my majors so finding the issue wasn't a problem for me. The issue is that my dsl line keeps dropping then, when dropped, it becomes unable to connect. This is not an issue on my end but on afrihost's end. After buying a new router and a technician telling me to get a new router and that my line is fine, I still get this issue. I have been emailing afrihost for the past 2 months now trying to sort this issue out but the person assigned (Kwanele N) refused to do anything to help me. "I reset the connection on my end" or "on my end the connection seems fine". I was told this for the past 2 months.

I think it's time I change my ISP.