No I don't. As mentioned above, I think cellphone plans are incredibly complex. But typically it is clear what the difference is between the $40 plan and the $50 plan (usually some amount of minutes). I know I pay $30 for data. I know I pay $15 for texts. At least I know what I'm getting, and I can decide if I want to spend the money. And even when they're wrong they typically have some sort of basis for what they're incorrectly charging. In the software company example I gave above, even their own sales people could not articulate why I should pay for the higher product / what I would get.

And for what it's worth, my monthly bill is usually the same with Verizon. I did however have those same headaches when I was on AT&T.