Im always a bit wary of people coming to the door like that tbh. I have had someone do that to me before and i kinda got stung by it and there was lots of terms and conditions blah blah blah and ended up changing back!!
Not saying its not a good idea but just make sure you get info and read everything thoroughly first .. maybe a good thing to change
Hmm hope i dont sound bossy .. dont mean to .. lmao