I think ATNO's point was, if you can't even get your own site hosted reliably, how can you offer to sell it? Even if it is on another host.
If the other host is more reliable, then just host your site with them.
With regard to your existing host, is this an automatic monthly payment? Or do you have to manually enter your credit card/paypal stuff?
If you paid on a credit card, simply call visa, file a fraud complaint. If you paid with PayPal, you've got 30 days from the date of the transaction to go complain. So, go complain and file a fraud complaint against them now while you still can.
It's been over 2 weeks since you paid, and you still do not have service. Are they responding to your E-Mails? Are they attempting to make up crappy excuses? Or just not responding at all?
Basically, here's what I would do...
If you paid via PayPal, tell them they have 3 days to refund your payment IN FULL (they can reverse the payment without costing you paypal fees, rather than simply negotiating a new transaction), and if your refund is not there in 3 days, that you will be filing a fraud complaint with PayPal in an attempt to recover your money, and you will also be filing with the FBI Online Fraud department (if they are in the US).
If it was with your credit card, simply call VISA and see what they say. File a fraud complaint, press charges, whatever they need you to do to recover your funds, tell them not to accept any charges from this company in the future, and if VISA will go with it (I don't know if they insure services the same way they do physical goods), file a complaint with the FBI Online Fraud department, then send them an E-Mail telling them that you have done so.
At this point, if it were me, I wouldn't WANT the account activated. I'd just want my money back, and to completely forget about them.
Btw, Welcome to Ozzu

I am asking for a refund right now. They have only responded to my messages twice out of many more. I'm not going to post the hosting company name because I definately don't want to cause trouble and have them do something criminal with my credit card... I will give them more warning as to what I intend to do if this isn't fixed.