Maruti Insurance — policy payment

Address:

Nexa Civil Town, RR Plaza, Opp. Maruti Showroom Panposh Road, Rourkela769004, Odisha, Sundargarh, Odisha

I have renewed my policy in the official website of maruti insurance in the jan 22, 2019. As doing the renew online the site calculated all the amount with it and showed the cost as 18323. But when i got my official letter from the company as for the renew of my policy the amount there was written was 17137. That means i paid 1186 more from my account. The payment was done with the credit card.