Disabling a customer for bringing the server down isn’t treating them like crap, but not disabling it would have been treating every other person that SHARES the server like crap.
It’s not their job to fix your site, but it sounds like they gave you access to clean it up and pointed you in the right direction to get started.
Did you fix anything? You seem to have jumped from getting access to not getting a response, with no mention of fixing anything in between.
If you’re saying you already did some of the things they suggested before getting disabled, then that would indicate there’s still a problem you need to get fixed if you want to run it in a shared environment.
Assuming it’s a site using some sort of 3rd party blog/forum/etc… a good start is enabling any caching options and disabling plug-ins/mods to see if it gets better. If so, you can re-enable the plug-ins one by one until you hit the one causing a problem. Sometimes, it could even just be a clash between two incompatible plug-ins.
Other than that, you didn’t really post enough info for anyone to be able to offer suggestions.
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