Bajaj Finserv — Need to Cancel the Insurance Policy in free look period

I have taken a OD facility flexi personal loan from Baja Finserv it has included health and medical insurance as well for which they have charged 22599/- inr from me over the approved loan limit.
i dont required this policy as my company already provided me life and medical insurance and i have already taken medical insurance for my parents from niva bupa.
i want to cancel my policy FPP Lite as i don't required it.
i have already raised request(SR[protected] which they are closing without my concern so i raised request again(SR[protected].
Free locking period mentioned in policy is 15 days.
Policy No- FLC[protected]
below tickets i raised which is getting closed from their end.
SR92613290
SR92581053
SR92557846
SR92526253
SR92495975

Again Raised

SR92631455

I can see in policy it is mentioned free lock period is 15days.
i want to cancel insuarance as i dont required it, i already have it.