Kapil Chit Funds — they deducted 2200as insurance without my permission

Address: Nizamabad, Andhra Pradesh, 503001

I have 500000 chit in kapil chit vinayak nagar branch nizamabad. I lift the chit in open auction. And i submitted required documents. When they asked me about insurance i told them i am not interested. They also agreed to pay awarded amount without cutting insurance amount. But when i get awarded money, they deducted rs 2200 as a insurance for chit amount. I didn't signed any document related to insurance. They deducted rs2200 without my authentication. When i approach the branch officials they r not responding. So how can i get my rs 2200 back.