Intermitted Internet services

We have since December Intermitted Internet Services. Not a slow internet but NOTHING. Most of the times on weekends we don't have internet, and in the evenings as well. It is on and off, mostly off.<br> But we must pay for the full service but we don't even get 40% of the usage of the internet. We had to buy constantly data from other suppliers just to have internet access at our home.<br> We again reported it, they contact us and we explain our problem, the next moment the fault is closed, with nothing done to it. The Problem is still exactly the same.<br>