Bajaj Finance — want to deactivate my emi card

Address:

Jalandhar, Punjab

Greetings,
Sir/madam,
I want to deactivate my card as i don't want to continue with this bajaj service.
As there are no complaints against it but in 2 years of span i haven't used it for once so for this reason i want to deactivate it. If in future i need it i'll surely enjoy this service but for this time period i want you to deactivate my card.
So please guide me how can i deactivate this service.
'thanks and regards!