State Bank Of India [SBI] — debited twice on a transaction at pos at sree sivananda gen.stores,bangalore to be credited

My SB a/c no. is [protected] at SBI, Kumarapark, Bangalore-560 020. I used my Debit card, with having sufficient funds at Sree Sivananda Gen.Stores, Shivananda Circle, Bangalore for Rs.541/- on purchase of some grocery on their two different machiines (POS). Both have been declined. So I paid cash & went back home. Afterwards i received a message that I have been debited with Rs.541/-. When I spoike to Sree Sivanada Gen stores-they said the Bank will credit after few hours. But SBI has Credited Rs.541/- and again debited Rs.541/- on 14.10.2018. Still my amount of Rs.541/- has not been returned. Hope you understand my problem. Kindly help me and credit Rs.541/- to my account.
Thanking you sir,
Ranganath.M.K.
Mob:[protected]