Mason Petition Declined...what next?

My petition for the local lodge was rejected last night and I got a call today from one of the guys that vouched for me...he didn't tell me much except that I was not accepted and that I could repetition in 6 months if i wanted to. I am pretty upset about this and hate not knowing the reason why. What if anything can I do to find out and try to correct this so I could join in the future?