Policy lapsed without being contacted

I have policy with Metropolitan life since 2008/9 . in 2015 I have requested that they should change my banking details, December 2015 I have done 1 reversal from the policy that been paid for 6 years and have an enquiry to increase premiums and add members in the policy, only to find out my policy has lapsed without any communication or notification from Metropolitan Life. I am very disappointed and called the bank and they told me that there was never stopped debit order in my account. I need the account to be reinstated or they have to pay me all my monies and I will get the policy that will respect my concerns<br> <br> I will not deal with the bank hence I have never stopped any of my debit accounts, my policy is my life