Money comes from me and goes to them, in exchange for services (cellular phone activities)
I'm pretty sure that makes me a customer, dumbass.
Want to get even more technical?
The word "customer" can also refer to a POTENTIAL buyer, which means someone who isn't even paying or using the services that the seller provides.
So, going by your logic of telling me to break off and get my own account, the fact that I am in position to seriously consider that, also makes me a customer.
Either way, you are wrong as .