Canara Bank — atm transaction failed not reversed

I have done withdrawal of 1000 rs and on 07/04/2020 & 500 rs on 18/07/2020 but amount debited didn't came through atm, it's almost more than 15 days but not yet reverted to my account, i have raised complaints in my home branch but if i call them every day they will tell same ans it will take 7 working days tats it..

Basaveshwar nagar branch
Name : praveen kumar n