TVS Finance — check bouncing

Address:

village rodiya, Khargone, Madhya Pradesh, 451113

I have purchase a new TVS Victor Bike, and it was financed by TVC Finance. I have to pay 24 EMIs. So i have paid 20 EMIs properly at every 5th of the month. But after that my salary was crediting late at 6th of every month so my check was going bounce and i am going for paid at every 7th of month. So i have paid amount 2 day late for my 4 checks. Now i have paid all my 24 EMIs. But now TVS demanding for bouncing and i am redy for paying the bouncing, but they are not settling the amount. Manager is using abused word while i talk to him at first time. His name is Rishiraj pillai and i am from Khargone MP area.
Now suggest me what should i do.