I ported out my number to att after a very long contractual relationship with Verizon. This was on the date that my service is charged everymonth. The port took about 4 hours and I was disconnected from Verizon. I called a couple of days later to make sure that everything was as it should be. I was told by the CSR that Yes the port had already taken place on the date that it did. When I inquired about how the billing for the month would take place the CSR told me that I pay a month in advance for my service. I was not aware of this practice so... read full review »