HDFC Bank — amount debited but not dispensed from atm

Address: Lucknow, Uttar Pradesh

Today i tried to debit some amount from hdfc atm located in telibagh lucknow-226002 near my place. Firstly i tried to debit 1000 rupees, but it showed unable to process then i again tried to debit 2000 rupees in this thought that 500 rupee note might not be available. After transaction, amount was not dispensed from atm. I stood there for 15minutes but nothing happened neither any guard was present there. Please revert back my amount as soon as possible.