I love Verizon's service. Our small office uses it in preference to the non-Verizon VOIP offering that the rest of the office uses, even though we pay more for it.
But every time we get a call from Verizon sales, or call in to fix some billing problem, it is painful. Either technically--"switch from Centrix and we'll save you money" ended up with no calls coming in to one phone line (or maybe it was call hunting that didn't work) and no voice mail for several days; or billing wise "your price will be xx amount, minus a $20 promotion on top of that for the trouble that the failed switch away from Centrix caused you"--where the amount wasn't what was promised.
And when I call in to clean the issue up, the answer is "they shouldn't have done that, it won't work because of" (fill in a reason that takes us 10 minutes to understand).
Verizon, we love your service at our home. The plans are simple, the bills are relatively easy to understand. Please make your small business billing as easy to deal with.
If you'd like more specific suggestions, I'd be glad to go through our bill with you and point out what confuses us.