Negligent damage by installer. No accountability from frogfoot

This company in unreachable if you have a problem. Their installer installed Fibre to my neighbor, and disconnected my fiber connection. I found his number and he promised to sort my issue out immediately (within 5 minutes). 4 hours later and he turned off his phone. There is no way to contact frogfoot to rectify their mistake, as staying home and hoping they will arrive to fix the problem will cost me another day's income. There is just no accountability. My is logged a fault, that will take another 4 days to resolve for something that was due to their negligence