You could try contacting them yet again and telling them that. Maybe someone hacked your account. If they look at their records and see activity from a totally different IP than usual, that could explain a lot.
On the other hand...we're talking about a $1 host here...it's like complaining the service at McDonalds is bad...you get what you pay for (though there are relatively good $1 hosts, this does not seem to be one of them).
I doubt you'll be getting your data back. Was it that important?
I suppose there's also an important lesson for you to learn here. Make backups. And I don't mean use a backup option a lot of hosts offer, I mean download a full backup of your site every now and then and store it on your PC.