Indian Oil Corporation [IOC] — Double payment to Paytm

Address:

Plot No 233 Door No 12 1st Flr Sheik Abdulla Nagar Sindhu Street Virugambakkam

Hello,
In March 8 2020, 200rs I filled petrol in Indian Oil fuel station, 1st St, MGR Nagar, K.K.Nagar, Nesapakkam, Chennai, Tamil Nadu 600078 and I paid double amount (200Rs+200Rs) using google pay account to petrol pump PAYTM account.
I asked the petrol pump manager, he said "sometimes came bank issue so wait for 7days after that your payment reverse in your account.

After 10 days completed I payment not received then again ask the manager still not correct response till. Every month I ask again again he is not responding. Very depressed to handle very time.

Please suggest me