HDFC Bank — No cheque pick up done in spite of calling several times

Address: Mumbai City, Maharashtra, 400099

I have a HDFC LIFE policy for which I called on [protected] and requested for a cheque pickup on the 7th March 2016, I was told that I would receive a call within 48 hrs and it would be done, since I did not receive a single call, I called back again on the 13th March, I got the same reply and when I asked if my policy LAPSES who would be responsible ? The call was cut off, no one called even .after that
Again I called back on 16.03.2016 spoke to Bharati and gave a complaint & also requested to be connected to some senior person, I was not connected Nothing happened even after that .
Today 19.03.2016 I called again, spoke to Raj asked him to connect to a senior person, After keeping me on hold for a long time says his Madhavi Mam is busy on another call & would call me back at he end of the day .I asked him what was my policy date & he tells me it is 22nd March 2016 ..My Health is getting affected too .
They have to know the difference between CUSTOMER CARE & CUSTOMER HARRASMENT.
If my POLICY LAPSES, WHO IS GOING TO BE RESPONSIBLE ??????
AND IF LAND UP IN HOSPITAL DUE TO THIS HARRASMENT, WHO WILL BE RESPONSIBLE???????