Reliance Digital — Pos transaction failed but card holder's a/c debited

Address:

560076

Sir,
Transaction Particulars:
Account No [protected]
Name of the Account holder : Uma Sankar N
Amt of transaction : Rs. 30000/-
Date of transaction : 14/01/2017
Branch IFSC: SBIN0002736
Card No. [protected]
POS TID : KA002289

On 14th of January Rs 30000/- was deducted from my account at Reliance Digital but no transaction slip was generated from the EDC machine and it prompted as transaction fail. I was assured by the retailer that the amount wiill be credited within one week . After a week when the amount was not credited to my account I had to call Reliance Digital store where the transaction took place and they sent me a screen shot on mail about the transaction not being credited to their account. i complained my home branch they given a statement transaction successful,
since 3 months there is no resolving my case.