Howdy;
Sorry to hear that you are less than satisfied with your service and our customer service.
"They", (I presume you are referring to staff), never suspended your account. Your account was automatically suspended by the system twice due to high system resource usage. It appears that your attempts to install vBulletin were temporarily exceeding the resource allowances for the free hosting servers, but it is possible to install a legal licensed copy of vBulletin on the free hosting servers. Others have successfully done so. You state that you were considering upgrading to paid hosting. Ironically, if you had actually upgraded to Premium service or even or Prime service you would have very likely been able to install and operate your vBulletin with no difficulties at all. You would have also received premium hosting support.
Free hosting support at x10Hosting is community based support provided primarily by volunteer members of the community support team. Members of the community support team and sometimes even staff may read a post in the forums, (including free hosting support), but may or may not immediately respond to the post for any number of reasons. It is entirely possible that members of the community support team, (including Anna), were privately communicating with other members of staff and / or management in an attempt to diagnose and resolve your issue.
If a user requires premium hosting services and the associated premium support services, the upgrade is very affordable, easy, and quick.