HDFC Bank — discontinuation of policy

I have a purchased a policy in hdfc life 20302458 on[protected].
When i purchased a policy, agent told me the amount of charges are 2.5 %, however after policy, they started taking other few more charges which is around 10%.

Now when i mailed them to discontinue to my policy, they told ur money will be given after 2 years, which was not told by agent.

When i called agent, number written on my policy document, she tolds she no more works with hdfc life.
I keep on mailing them, about stop of autodebit from my account, but they never reply in positive way, infact in very diplomatic way and no confirmation and no conclusive answer has been recieved. Infact they told my money is blocked.