Bajaj Finance — vas charges

Hi,
I bought a Ac through bajaj finance. I missed some of the emi payment but made the payment through bajaj online payment option on their website. Now that the loan is completely cleared. I have recieved a legal notice for emi payment of 7, 230 for VAS services.
On checking the loan account number 4010VS78712508 which i recieved on the message. I notice that for a loan amount of 3231, I have an overdue of 7, 230.
I have called on the customer care number so many time as well wrote a mail to them but there is no solution to this.

Can I get some reaponse as to what these charges are for and if I have missed 6 emi's for this loan account why haven't I got any intimation regarding the amount earlier. Rather i got a legal notice for the same.