United Bank Of India [UBI] — debited money but transaction failed

Address:

Nagaon, Assam, 782122

On 8/01/2019 at about 6.50 am i tried to add money with airtel payment bank online through but the transaction was failed at the last moment whose reason is not known to me and debited a sum of rs.2000 my account without giving any transaction id. No transaction id was send to me through sms on registered mobile number. So i request you to refund my debited amount. Please
Your faithfully,
Azaharul hoque
Vill+po dhania bheti
Ifsc utbi0moi339
A/c[protected]
[protected]@gmail.com
[protected] phn