receiving unemployment

I just filed my unemployment claim for the 2 weeks I checked my remaining balance before I filed my claim I had 351.00 left on this claim but I only received 300.00 and my claim balance then went to 0 dollars. Just wondering if anyone else has had this happened to them when they still had moneys left on the claim. I should of received the whole amount for the 2 weeks because I am receiving 230 dollars per week .