Why did I agree to that stupid sales pitch!?!?
Good question.
Come on, you absolutely knew you wouldn't have "unlimited" web space. Did you bother to read the offering material, or go to the Verizon web site? Didn't think so, 'cause the web space is very clearly described there (from the Verizon website: "10 MB personal Web space."
Speed? Well, I don't have the 15 mbs service, I have the 5/2 plan. Get what I pay for, pretty much every time, from any of the speed test sites out there. Sure, Verizon wants you to use theirs, they control everything between you and that site, what would you expect? Do you get the rated speed from other test sites? How would you expect Verizon to control traffic outside its own network? Nobody, and I mean nobody, guarantees speed to each and every site in the world. Have you run the speed tweak that Verizon recommends? Many folks report that doing that makes a BIG difference in what they get.
30 days? Yep, unless you signed a 1 or 2 year contract, my understanding is that you do have 30 days, not 3. At least it used to be that way, since I have had FiOS internet and TV for 2 years they may have changed things since then. Who is telling you it is only 3? I just did a quick check on the Verizon website and it very clearly says "30-day money-back guarantee" for all plans. So go give Verizon hell about it.
Look, FiOS is not perfect, but from my experience it is far, far better than the cable service I previously had. I encourage you to give it a fair chance, if you do, I think will wind up very satisfied. I know I am (and no, I don't work for Verizon, and never have).