If it was 2 days ago, it looks like your being watched. Have you had any recent encounters with people asking you about gear? Have you told anybody that you will hook them up when your stuff comes in?
There is no problem with you calling the customs agent before your attn. if you can keep you mouth shut when he asks you questions. Just call him and say "This is so and so and you left your business card here for me to call, what do you need?" Then SHUT UP....
If he starts asking for confessions or what kind of things you order from overseas simply state "Am I being charged with anything, if so I want to speak with my attorney, if not I do not wish to answer any more questions at this time."
Then call your attorney, but DO NOT give ANY info, no matter how nice the guy is or how much shit is dribbling down your leg at the time.
Good luck