Roomster business model is Roomster business model is to trick you Internet

Here is the Roomster business model, as it was applied to me:

1st: a service that is needed by a bunch of people (room rentals)

2nd: an incentive for you (free registration, with a catch... the messages for you are just warned, to see them you need to do a different registration)

3rd: but you can do a trial registration for a small amount, just 7.95, but this is for just a short timeframe, only 5 days

4th: you receive several contacts, in my case, none was productive, and several looked like scams, but, as soon as the 5 days time expires (what they exactly wanted is you not to be precise in cancelling the subscription before the 5 days period), with no previous notice they charge automatically a threefold amount 24.95. So, what was a cheap trial turns into an expensive experience. 

A decent business do not define a TRIAL so short (the idea is you to try the service or quickly run out of time?)

A typical business offers a free registration that works as an incomplete trial because you are not provided with any useful service, then you are prompted to accept the PAID TRIAL, so you provide your payment info, and you can fall in the next step of the trick

A decent business do not price the TRIAL so differently than the regular service (which is threefold!! it is so clear that this is the focus of the business, the automatic renewals)

A decent business accepts the cancellation (and refund) by customers that do not intend to use the service and were charged just because they didn´t cancel the service timely

A decent business warns its customers about the renewal, giving them time do decide consciously (they want their customers to pay for a service they want and they find useful, not just they want to take money from their customers when providing no useful service. You think a customer treated like this will ever come back again? or recommend the service to friends?)

I think just complaining is not enough. People come here when it is too late. The owners of the service are not sensible to our claims (I tried to make them to see my points with no avail), so I invite people here to change ideas about how to prevent other people of being at the same situation we are now. We could set up a group to discuss ideas, maybe finding ways to warn people previously, or maybe trying to file a legal claim to block the company website. I am opened to ideas.