This was a while ago, but I saw the "call or click before you dig" billboard and it set me off.
I hate fences. I've torn down most of our fencing (only shared ones remain) and replaced them with trees/bushes/etc where I want a physical barrier. Planning on planting a row of hedges, I called the "call before you dig" number. I found out they don't really do it all. You still have to figure out who has things buried in your yard and call some of them yourself. Okay.
So, I come home one day to find my yard with a series of little flags running around it. Great! They left us a little map - but the map and the flags don't seem to line up in the slightest! So I call the "call before you dig" number to try to get a little help. Nope. They acted like I was a moron and I needed to stop wasting their time.
I was outside trying to figure out what went where and my neighbour, a retired civil engineer, wandered over, curious about my project. Together we couldn't figure out how the map related to the flags! To add to it, neither the map nor the flags for the gas line made any sense since they didn't seem to come near the meter.
In the end, I figured that since where I was digging had no flags AND was clear on the map, I'd just gingerly dig down and hope for the best. It worked out, but now I curse every time I see their ads or commercials.