Star Health Insurance — Claim of treatment underwent

Address: Chennai, Tamil Nadu, 560078

Website: www.starhealth.in

I am a Star health Insurance policy Holder. I underwent Treatment for dengue In Fortis hospital, Bangalore and after discussing with them sent a re-imbursement claim. They asked me to send it to Delhi. They received it and kept it from 13.1.2016 till February 2016 and then they sent it to their chennai office. The chennai office received it on 11.2.16. Till today 11.3.2016, I have not received any feedback from them. I am calling them and checking up. When I called them about 10 days back they told me that within one month of receipt of document they will settle. But one month is over. When I called them today I was told that it will take another 5 days. They have been stalling me.
Please tell me what to do.