Apollo Clinic — billing issue - pos failed but still charged me

Address:

1259 Mukundapur, Flat B1, 1st Floor, Jeet Sansar Ph 1, Shatabdi Park Block D, Kolkata, West Bengal, 700099

This is to bring to your immediate notice and attention again that a transaction of rs.1000/- as doctor consultation fee of dr. Kasturi bhaumik for my patient mrs. Srinjana biswas ([protected]) done on 12th oct, 2019 at 4:03 pm at your salt lake clinic vide my indusind credit card number 4412 xxxx xxxx 2002 failed due to a callous power failure of your pos.
Since, i had already typed in my pin, indusind approved of the same but on power restoration of your pos, you denied and supplied me with the failed transaction slip (Please find attached your pos trnx failed slip).
Then i had to pay the same amount of rs.1000/- for the same purpose vide my kotak credit card as you may see from the other attached slip and your receipt, after clear and repeated assurance from your so called floor manager who committed not to claim the failed transaction on indusind card. Please note that she took a copy of the failed transaction slip so that no mistake is done in doubly charging me. I had already sent an email to you and indusind bank regarding the same, then and there.
To my utter disappointment and surprise, you have charged me the failed transaction as seen from my bank statement failing any whatsoever commitment from your side.
Having said that, please take immediate action on your side and refund the money asap, and kindly revert to me at the earliest. This is to avoid raising transaction dispute as suggested by my bank by 26th oct 2019 or any other further action on my side pursuing the matter.