State Bank Of India [SBI] — To stop ecs

Address:

West Godavari, Andhra Pradesh

Sir,
i am a regular customer of sbi.and ihave an account in bhimavaram, andhrapradesh.i want to stop monthly ecs payment to icici prudential suraksha savings policy.the bank officials saya they require approval of insurance company to stop the pay ment. my question was i should have right over my account, why do i have to take a concent of third party to stop the payment from my account.plz guide me at the earliest do i have to take permission from the third party to stop the ecs payment.
with regards thak you

vijaya lakshmi