This happens all the time so dont give up. The main reason is paperwork either wrong or beem miss placed etc. I know of a guy who was refused 3 times but it was down to not understanding the visa issues as he was here on a visitor visa he left the country and the company then applied for his business visa however no one thought that he had to cancel his visitors as it was the understanding that it would be autimaticly cancel but that was not the case he must cancel before applying for business visa. So make sure all paperwork is in place and continue to apply a business visa can be turned around in 4 days but make sure the original has been canceled