Yes, although in the signup, it claims that they won't charge you unless you upgrade your account from the free tier - i.e. at the end of the trial period, you won't get a surprise subscription bill because you forgot to cancel something.

Yes.

I don't remember giving them my credit card during my registration.

I explicitly remember them asking for both when they first launched

Yeah that's not the case for me. I only gave them a phone number. The salesperson did give me a call, but gave up after I explicitly said I'm only here for the free stuff.