My company has been an Invoca customer for more than 2 years. I've never been that crazy about them. Their support is based on a ticketing system with no easily accessible phone number or chat that I could find. Their pricing involves call caps, and if you go over those caps you incur overage fees. Other companies just charge a per call fee regardless of volume. We were surprised a couple of times by massive overage fees.Now we are trying to finally leave Invoca to go to a competitor (which so far has been a better experience), and we are learning that none of the numbers created on Invoca can be ported to another call tracking provider.Our current provider provides much better support, doesn't have call caps, and allows customers to port numbers out of their system. There are far better providers out there.