It is my opinon that a customer should never lose data unless it is his fault .. or unless it was a provable act of nature (ie: fire, hurricane, tornado etc.), or a hardware issue and the company clearly stated that backups were the responsibility of the customer.
It is also my opinion that servers just shouldn't go down.
Shit happens.. you'll get downtime .. but for a company to say to me "yeah uh .. someone unplugged your server man ... and uh .. we moved you to another server 'cause uh .. we felt like it .. and uh .. guess what .. we lost your data" .. that to me would translate into:
"Dear unvalued customer. Please find somewhere else to host your web sites at since we are a bunch of fucking morons who don't know how to run things. Sincerely, your dumb ass web host".
I would be PISSED if I were you. Demand a refund and switch hosting companies. While you're looking read reviews, look for awards and customer feedback etc... look for network graphs, data center photos etc.
Buying a server is like buying a house. It's something you simply can't live without. So don't skimp on your decision.
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