Treat their good reviews with a high degree of suspicion. My parents are paying €100 a month for a phone line that does not work for more than a year now, 2.5 mbps during the day and less than 1 mbps in the evening. Been trying to cancel for a long time now. Through registered post, emailing and calling. And when you call, you get through to a nice sale agent, you say you want to cancel and they put you through on hold for a long time then cut you off.
The only option now is to cancel the debit order. However, I have now read on ispreview that they send out debt collectors. Once you are with this thuggish company you'll feel truly trapped.

You WILL REGRET using this thuggish company. Stay away at all costs