Onkgopotse S

Grasmere Toll Plaza Overcharging

I've monitored this for a couple of months now, roughly 4months - I've intentionall ran my concession card to a zero, and used my Visa Petrol card for up to 4days (meaning entry and exit) of my offramp toll (Grasmere). I've noticed that when the teller swipes my card up to 3times, I get billed thrice, sometime 4times. My bank statement shows me so, I've always asked for my receipts when I use my Visa card and the proof is there, I've got 2 receipt per day versus 6 swipes, meaning I get over-billed. There's nothing wrong with my card or the magnetic strip. Please help