Yes, the charges are correct.
You can create a ticket at support.zerodha.com, team will check and assist.
Also, if you’re checking old contract note, do note SEBI had reduced charges from Rs. 10 per crore to Rs. 5 crore until March 31, 2021. This post explains it in detail: Zerodha has suddenly doubled the SEBI charges - #7 by Nakul
You want to say charges won’t be applicable if turnover isn’t 1 crore?
If your turnover isn’t 1 crore charges will be less than Rs. 10, but those will be applicable. And yes, turnover = total buy + sell value.