Canara Bank — i am complaining for non-receipt of atm cash and bank staff not supporting to solve my problem

I am an account holder of canara bank. My home branch was in guwahati (Assam) but i transferred my account from guwahati to bangalore basavanagudi brach. I tried withdraw 8000/- from canara bank atm on 12th october 2017. The amount deducted from my account but i didn't receive any cash. I complained customer care, i filed a written complain in bank but not getting help from anywhere. Today it is 21st october till no response from bank. I went to bank and asked chief manager to refund my money but bank chief manager behaved very wired and told me "do whatever you want, i can't help". Now i just want to ask if bank people will not help there customers so why are we using bank? Whom do i ask for my money refund?