Fraud by insurance company

My father took an insurance policy of Bharti Axa, the policy had two options which validated one time payment as well payment in 5 years of the same principal amount . My father took the option for one time payment t however , the policy that came to us had the other option ticked ... The policy that my father took was of 2,50,000 as one time payment and they made it 2,50,000 as payment for 5 subsequent years and now they say that it is our mistake. There are lots of cuttings that have been made on the policy documents , which were not made by my father but the company is refusing to admit. kindly tell what can I do.if possible kindly contact me on my mobile 9915858165