Union Bank Of India — money stuck in cash deposit money

Address:

Lucknow, Uttar Pradesh, 226024

I was depositing 20000 rs in my account at the cash deposit machine at the elobby situated in chandjanj branch, lucknow. The machine took the cash and the machine it showed an error saying out of service. I immediately rushed in the bank and informed the manager about the same to which he said to write a complaint in hardcopy and the money will be refunded in your account within 8 days. This incident is of 28th august and still i have been calling the bank and branch to which they have been telling me sir it will come in a day or two. Everyday i call them and they reply the same. Its been more than 10 days now and i haven't received the money back. Kindly so to this matter asap.