ICICI Prulife — Non response and irresponsible behaviour

I had policy with icici. No. 11186239. When i called customer care to tell me the procedure for surrendering the policy, after too many holds and passiing of the lines finally they said send a mail to [protected]@iciciprulide.Com. Despite of many mail correspondence through my regisetered e mail id, nobody is responding. And surprise is that, monthly i get mail from icici prulife for my policy's nav. Its all discouragiing.