@Supernatural,
When you run 15-20 torrents at a time. Disks just gets overloaded and all Clients on the server gets poor performance. Ravi is running a business and he need to satisfy all of his clients. If you really want to run that much torrents, you should get a dedicated server or atleast RDP account with one HDD dedicated yo you.

If ravi offered you a refund, then take it and back off.

Note: I am not connected to Ravi's business.