PhonePe — wrong debiting to my visa account

Address:

Ashford Park View, Site No – 9 Industrial Layout, Koramangala 3rd Block, 80 ft Road, Bangalore-560034.

My problems were informed to phonepe as below:

"please note that in my visa credit card bill for february' 2019, phonepe pvt ltd, bengaluru has debited rs 1375 to my credit card account.
But they have shown the transaction date as 13/09/2018!

(1) first of all, how & why phonepe has debited any transaction to my account after 5 months!!

(2) secondly, i have gone thru all my details of transactions done against phonepe and there were no such transactions on 13/09/2018 & all other transactions nearby that date are very clear & transparent.

Pease clarify what is this charge debited to my credit card account by phonepe.
Please find enclosed two credit card statement of myself.
One is of sept 2018 & the other is of feb 2019.

Please check both the credit card statement.

In sept 2019 statement, there was a transaction dtd 12th sept of rs 1395. (Orange shade row)
This was debited by phonepe to my visa card against a bill payment. The transaction id was n[protected].

In the same statement, on 13/9/18, amount of rs 1375 was credited by phonepe to my visa card. This was a refund transaction from phonepe to visa against an offer. (Yellow shaded row)

So this was clear & closed in september itself.

Now suddenly in feb 2019 statement, i found that phonepe has debited the same amount rs 1375 again to visa & the transaction date is kept as same (13/9/18).
Pls refer to the feb card statement (Yellow shaded row).

Now my question is why & how phonepe can debit an amount again which has been already credited by them as a refund as per their offer?
And that too, after 5 months??

This is my query. I have furnished more details than what phepe have expected.
They have not replied anything to me after that.
Now phonepe need to clarify my query & arrange to reverse my amount debited immediately."