Unfair treatment on accident payout outcome. Policy number: ***

I took a policy for Motor Vehicle and Personal accident plan. Policy number: ********** 85. I was involved in a car accident on the 4th of May 2018, where my car was written off. My claim was approved, but i was informed that i will only be eligible to get a payout for the motor vehicle accident plan. I pleaded with the insurance company as to why was my payout not fully covered. I was paying both monthly premiums which were deducted by the Bank on the same day, which was the 25th of every month. According to the insurer, only one payment was received. I then produced proof of both the premium deductions, as this reflected on my Bank statement. I believe that i was unfairly treated by the insurer's outcome. Can this please be rectified before i take further steps on this matter. This has been long overdue.