Paying (off) toll notices.

[XCwillo]

Hey guys, got back from my christmas leave period 2 weeks ago and In my pidgeon hole at work, had 10 toll fines! All $23 each! I've never dealt with this stuff in my life and staying with my parents over the holidays I didn't know anything about Epass or any of that, got hit up about twice in and out of ipswich every time. Knew from the signs i had 3 days to pay them but I had no access to internet for most the time other then on my phone :S
Long story short. I've received a few more since then, the last ones would of been the ones today. Have about 15 all up!!
One of my mates said he hasn't paid any tolls in over a year, just wondering what the deal is if you just let them sit? I live in Victoria and all this happened in QLD btw.