Afrihost, no connectivity and out of touch with customer service

They claim to have a fantastic service, net work and customer service. My wife works from home and is dependent on the wifi network. We keep going off witb no WiFi for up to seven days at a time. I have written to the CEO who has never responded to my e mail i sent 3 to 4 weeks ago, but got someone else to respond and blameed MTN . I sent them another three emails since saturday morning as we again do not have connectivity, but only got one responce telling me its working from thier side. I have confirmed and assured them that we are connected but without internet. This means that nothing comes in or goes out, no emails and or whats app etc. This is exstreemly frustrating not having any communication with you clients etc. Please sort this out and stop blaming MTN as my neighbours all use MTN and do not have a problem