Unfortunately I read the previous reviews too late and I became one of their scam victims.
I needed a urgent plumbing service, I called them, somebody called me back and somebody came last Sunday. I explained the situation and without even understand further, the monteur started to work. They mentioned only 39 E costs and starting price of 244 Euros + 40 meter per sewage plumbing. After less than 2 hours, the bill was 3.500 Euros and the problem was not fixed at all. In fact, I had to call the Gemeente the day after, and they fixed it in 20 minutes in the sewage OUTSIDE and they confirmed that it was impossible that the monteur digged 30 meters sewage [as he mentioned when showing the bill that I had to pay straight away] as I don't even have that amount of sewage. The company promises a quote beforehand which they didn't provide, but also the bill doesn't explain the costs and there are extra costs which were not mentioned before he started to work. In fact, he made me signed a blank page mentioning only what I wrote above.
Emergency or not: PLEASE BE AWARE, DON'T LOOSE YOUR MONEY. Everything I read before it's exactly how they behave with me, just the bills was even higher.