Thank you for the feedback and you are right that the pricing does not work for someone with only 4 customers. Keep in mind that starting a business has costs, even opening a bank account and collecting money is pretty core to this so we do not expect this to be a free service.
We made many mistakes with the implementation and communication with this but do not feel that the $39 plan made this worse. We always listen to our customers and have done this for 7 years at Grasshopper and have gone through both price decreases and increases. We will continue to listen to and work with our dedicated customers and passionate Hacker News followers.