In absence of response/complaint not addressed to your satisfaction, you may lodge a complaint with
NSE (Exchange) at https://investorhelpline.nseindia.com/NICEPLUS/
BSE (Exchange) at https://bsecrs.bseindia.com/ecomplaint/frmInvestorHome.aspx
NSDL (Depository) at https://www.epass.nsdl.com/complaints/websitecomplaints.aspx
CSDL (Depository) at https://www.cdslindia.com/Footer/grievances.aspx
SEBI at https://scores.gov.in/scores/Welcome.html
Please quote your Service Ticket/Complaint Ref No. while raising your compliant at SEBI SCORES/Exchange/ Depository portal.