I would take this problem to the lst Sgt, then/or the Commander of his unit, if that fails to bring a resolution, I’d go to the IG. The NG operates a bit differently than the regulars, I know, but this is serious. Also, as an old admin spec, I’d make copies of everything I had to hand in for reimbursement.
JT, please see posts #282 and 284. Love, Mom