Meru Cabs — in availability of bill

I was in delhi airport terminal 2 on 21/10/18 rand 7 pm. I booked a meru cab to go to swati delux hotel at karol bagh for which one otp came in my mobile no. But after arriving the destination the driver told to pay rs 709/. I asked for bill, hr told it will be sent in ur mobile but till now i didn’t get the bill. This is the official tour so i have to submit the bill. Kindly provide me the bill. Otp is 69219, date 21/10/18, time 7 pm