Mahanagar Gas — incorrect deduction of mahanagar gas bill bp [protected]

I have paid mgl bill no.[protected] on 07/07/20 & rs. 947.00 have been deducted from my bob account under transaction description[protected]/l2133_mgl/techprocess. Here it should be noted that the bill amount is not 947.00 whereas it is 1065.00
The mgl says that they have not received any amount for said bp no. Then what happened to rs. 947.00 deducted from my account?. What is the status of that?
Please do needful to refund rs. 947.00 to me or give me status of the amount deducted from my account.