South Bengal State Transport Corporation [SBSTC] — no refund done since 2 months passed

Address:	711104
Website:	sbstc.co.in

Sir, my name is smarajit shome, my registered mobile number is [[protected]].
I booked a ticket of rs. 140.00 for journey date 27/10/2018 in two attempts.in first attempt the amount was deducted but seat not booked.in second attempt the ticked booked & again amount deducted. But till today (29/12/2018) two months passed, no money refunded for the first failed transaction. I have the proof of my bank passbook reflecting the deduction of amount. Their customer help line is not responding. They are saying that they can't tell anything about the refund status.
Please sir, solve the issue. I am a student & it's feeling very bad to contact the sbstc help line number again & again without any solution.
Thanking u