National Highways Authority Of India [NHAI] — Extra toll charges deducted on kmp expressway

We were on kmp expressway, we started from badli and exited from kundli. They should have deducted 80 rupees from fastag, but 2 days later we got a message that 235 rupees have been deducted from kundali expressway. It was 25th January around 10am and the person inside the toll booth said “server down hai bhaiya” we still asked for a slip, however he said “slip nahi hai aise hee chale jao.” We knew something was wrong however we continued because we don’t use the expressway frequently so didn’t know if it works without a slip. This was the toll booth at badli. Please get us a refund because they charged us 235 rupees whereas the toll was just 80-85 rupees.