Canara Bank — Deducted money without authority.

The bank without any prior notice has charged me multiple times ECS DR RTN SC SB charges worth more than Rs.1100/-. Upon contacting customer care they told me it might be due to bouncing off on any recurring payment or EMI. I clarified that I have no EMI except bajaj is due which I pay by the 1st of every month. The customer care executive asked me to contact my home branch which is not possible for me since I am in Chennai so I asked my friend to visit but the employees denied giving any contact number and asked him to send me instead. The contact number available on the internet is not reachable. How am I supposed to get my money refunded?