Customer Centers are what UPS calls their distribution centers.I was told it needed to be a distribution center not "Customer Center" though you may be right. 1-800 told me an address in Baytown. I located it but no local number. Called the 800 number associated with that address got an absolute idiot. I said "I want to ship ammunition." about 5 times. She could not grasp what I was trying to convey until I said "I want to ship BOOOOLETS!" then she got it. The she start in on how to package. I know that I want to know if I can drop at that location - never got an answer.