Fiber issues and business down

We have changed a firewall and spent 2 days with Telus to get it operational.  We were working than a few hours later go offline.   Was told it was resolved last night.  Today we are down again, no internet, emails, business connect voip phones etc.  Called telus support and they advise it is a hardware issue at their end and a tech can get to it Tuesday.  Is this common and what restitution is there when I have to shut my office down for two work days to wait for a tech to fix their issue?