I used Rebus renderfarm service for a while a few years ago. I had some spare credit which I paid into my account for possible future use. I then came to a point where I was able to render some projects by myself so naturally asked Rebus for my spare money back that I didn't need to spend at that time. I would have been happy to use Rebus in the future had they simply just reimbursed me and said something like 'we look forward to the next time you come back to us'. They simply refused to reimburse me and said i was welcome to use them at a future date. For this reason, and this reason alone, I shall never use them again, until they do the right thing. I have told, and will continue to tell, many colleagues, and other industry professionals, about my experience. They can make their own minds up but I know that many do not use rebus, as and when external computer assistance is needed. The whole episode just stinks of greed to me. Very short sighted business attitude.