Using hostgator for hosting, downloaded zencart to public file, started working on it, the next day a second zencart file showed up in a seperate file, How? meanwhile all my work dissappeared and reverted back to the zencart default.

This has happened 8 times, now again today, all my work is gone and defaulted back to the zencart default page, however my logo and a few pages are still there but all products are gone. I cannot keep going on this way what is the problem... The hosting company says not them???

my site www.santa-workshops.com

HELP