Punjab National Bank [PNB] — purchase failed but amount was deducted from account

Sir, i have purchased two time at rs 249. But amount were deducted and purchase were failed, so please support me and kindly refund my money on the date of 31st january at time 10:25pm so sir please refund it. I don't know how the amount were deducted but purchase were failed so i try my second chance then again same thing done and the total amount deducted from my account were rs 498 so please help me and supporte me and refund my money