I strongly recommend that you do NOT call the campaign office in VA where you will get the run-around and delay your chances.
Go directly to the Treasurer, Lori Pyeatt in Clute, TX. Do it BY REGISTERED Mail - Return Receipt Requested. You do not need to give any reason or explanation. Just tell the Treasurer you want your contributions returned immediately.
The latest FEC reports showing the August financials are not filed with the FEC yet -- they are due on Monday -- but the campaign is always tardy.
Again, don't waste you time dealing with the campaign staff in VA. They didn't help during the campaign, why do you think they would now?