Union Bank Of India — Bank have seized my money without any reason

Address:

34,B Kustia Masjid Bari Lane kolkata 700039

On 16th May, 2020 I have been to the union bank atm to withdraw money from my account but when I have used my card to withdraw money, the money which was ₹13, 000 was debited from my saving bank account but I did not receive the cash from the atm then I went to the bank branch and raised several complaints and also followed all kind of procedures which they have asked me to file. But till now there is no resolution to my problem whenever I go visit the bank to ask the status of my complaint they don’t have any answer to that keep telling now this matter is with RBI. It is almost 9 months since they have forfeited my money and not ready to return me back.