"data loss" says the datacenter

A script was executed on my server through a vulnerability in Help Center Live, it opened a backdoor (which was blocked by my firewall) and apparently replaced a few system binaries.
I alerted my datacenter (not naming names) to this and they said they would replace the binaries and put my server back offline (i had rebooted it but it didnt come back up).. after they have tried to repair it, theyre telling me my filesystem got corrupted and all the data is unrecoverable..
WTF?
How does that work then? Even so im sure datacenter must have software to recover data from corrupt filesystems, and im sure the script cant have fried my hard drive?
As far as i know the script wasnt even executing as root, but as nobody.
This is extremely strange and i would value your input

 

 

 

 

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