TVS Finance — I not get my refund for excess emi amount

On February 22, 2021. I paid my Bike emi amount Rs. 4545/- through online to avoid my ECS mode payment on March but the ECS mode payment was not stopped and my amount 4545/- have been debited from my account on March 3rd, 2021. I arise a complaint to the TVS agent regards refund the amount but till now I not received it