Constantly down, passing the buck and ignore customers

I am unfortunate enough to be in a complex where we are forced to use Netstream.

2 weeks ago I was down for over 3 days. Again I am down, since last night. Netstream don't bother responding to any emails either. When escalated via my ISP they simply pass the buck and say Netstream don't work on weekends. Well you should not be in the service industry then if you cannot service customers after you repeatedly cause the lines to be down on weekends.

Beyond frustrated and this is costing me a fortune as I have to buy data so I can work.