So let me get this straight.
1/ You signed up and agreed to their Terms of Service (
http://www.shinjiru.com/legal/terms-conditions.php).
2/ You got your VPS hacked, not once, but twice.
3/ The "Hacker" used your VPS to send spam, which may or already did hurt the company (The chance of getting their IP, or even worse, the whole subnet blacklisted due to spam).
4/ Asking for a refund even though it doesn't meet their refunds terms.
Refund will be provided only if Customer experiences technical problems caused or related to items 100% controlled by SHINJIRU.
Sounds totally legit.
You seem not to know what a VPS is if you are blaming the hosting company for getting hack and claiming its an unsafe environment.
I don't know what's worse, the whole Shinjru bashing thing or the fact that you moved to Site5 and thinking you got the anonymity you want.