United Bank Of India [UBI] — a/c debited by rs 100 but transaction unsuccessful.

On 20/5/2019 at 22:41:26 hours a/c number[protected] was debited by rs. 100 against otp number 636147 for payment towards sscothdrcard but the transaction was unsuccessful. Please arrange for refund of rs 100 to the said a/c at your earliest and oblige.
However i beg to add that on 21/5/2019 the said a/c was again debited at 17:42:58 hours against otp number 368012 and the transaction was successful one.
Thanks and regards.