National Highways Authority Of India [NHAI] — Extra toll amount deduction malpractice at meerut delhi expressway

Dear team
there is a malpractice going on meerut delhi expressway for deduction of toll amount. I travelled from meerut to greater noida on 2/4/23. I entered from kashi toll plaza at took exitfrom dundahera plaza and return within 4 hrs from dundhare to meerut. The toll debited from my fasttag was 85 + 85 whereasit should be 85+ 40.
I am writing this because it has had happens may times. Please look into this matter and help us.