They took my money

I was reasonably happy with the app initially so I decided to purchase the upgrade. They took my money via iTunes but I did not receive the upgrade. I called them and apparently my free service had run out a week ago. Customer service was useless and rude and told me that I should wait and contact iTunes. Do they not know how to do anything to help their customers??? Useless customer service do not install this app.

Where is the service about magicApp Calling & Messaging, v4.17.4