Student — refund money or retrieve uc

I have bought uc of 800 rupees with successful payment by play store using internet banking but after the completion of transaction i got the message from bank thanks for usibg state bank internet banking. Reference no. For transaction of rs.799.0 from a/c ending * to times of money limited on 21-jan-2019 at 00:24 is igaffpusv9. But when i get back to the game page it says that failed to purchase. Now what to do?
So please refund my money or retrive my uc in my account.