Dg Shipping — false deduction

i have booked seat for written exam for phase 1 through online payment the payment has failed and shows internal server problem, so i tried second time and same thing happened but next day my bal is deduct from both transction for same booking. this is very big mistake in dg site by online if seat is booked in first transction there is no any possiblity for deduction in second transction . so i request to dg please refund my balance for false deduction. my indos numer 04GL3489 EMAIL [protected]@gmail.com mob:[protected]