Bajaj Finance — Additional emi debited in the month of aug-15

Address:

Thane, Maharashtra, 401303

I had purchased a/c from vijay sales on finance basis .
I had paid down payment of rs-3500 & there were 9 emi to pay
But instead of 9 emi these bajaj finance deducted 10 emi from my saving account (Emi started in the month of jul-15 but in the month of aug-15 company deducted emi 2 times i.E on 2nd & 5th aug

I had approched to executive of bajaj finance who seats in vijay sale outlet virar (W) and i had given her the copies of my bank pass book showed her where the amt debited twice she said we will refund amt in 15 days time this all happened at the end of feb-16 but till now there is no refund from company
The executive name is virakshi and her number is [protected]
Kindly look to the matter