Bad area network, Unacceptable

Why does my subscription keep losing connection every 10 minutes and keeps saying no network available. This is interference in my work and I keep losing signal with my clients overseas. I cannot afford for this to give me problems and this is not a excuse for Loadshedding cause there is no Loadshedding during the day. Every 10 minutes I have to reboot then it loses signal again. What is going on