HDFC Bank — atm cash not dispensed money deducted

On 17th september at 11:58 hrs. I withdrew 3500/- rs from a non hdfc atm. Money deducted from my account but cash was not dispensed. I was being assured by my personal banker that money will be refund in my account within 72 hours. But that was not the case. On saturday i register an email complaint and still waiting for the status no body called back. Today called customer care and got this complaint no (Muma[protected]). Was being assured that i will get a msg shortly regarding my complaint registratiin. Again no msg. Why all these portals if nothing is working. Please update me asap.