Service quality and customer/reseller support non-existent.

I have been a reseller for this company for the last 8 years, in the last 3 months my clients email services have been offline for periods longer than 4 to 6 hours for at least once every month, you call their support line, calls are dropped and they don't call back, support tickets are responded to a few days later in some cases. You have to call at your cost to find out what is going on and hold for 20min and call gets dropped again, worst ISP support center at the moment.