Within seconds of registering interest I received a sales phonecall that put me off with the sales pitch. I stated I want to withdraw and emailed the company stating this. I answered two more phonecalls that were again very forceful sales people.
I am still receiving multiple phonecalls every day.
I never got as far as using it so can't say whether it works once you're on it but I will not be using them and would advise any friends/family to avoid avoid avoid.