Canara Bank — Canara bank unauthorized ecs money debited

Hi I have been investing in mutual fund for more than two year through syndicate bank and I have not enabled auto debit for my sip.

After merging with canara bank suddenly ecs dr rtn sc sb with this reference total of 1700 rupees has been deducted and when I check with branch office they told me to check with paytmmoney .

When I check with them they are saying we wind deducts money as ecs and asking me to check with branch office.

Who is responsible for my money deduction