Actually, I doubt the 1-800 number actually goes to Buckmasters. It may be "registered" to them, but guaranteed that it goes to the telemarketing firm they've hired to cold call. Sad part is the telemarketers have a job to sell everything they can on behalf of their customer (e.g., Buckmasters), but they don't directly represent their customers. The telemarketers are using auto-dialers to dial numbers supplied to them. Once a person answers, the "system" forwards the call to the next available operator, which is why if you answer it may take several seconds before you actually speak to another human. Hopefully they speak a language you can understand.
I've heard relatively recently that as long as telemarketers use a 1-800 number, the DO NOT CALL list does not apply. Somehow that must be the caller ID identifier that congress allowed so that the public can make a choice whether to answer (personally I never answer a 1-800 incoming call... it's always telemarketing).
In any case, you're probably better off contacting Buckmasters directly at:
10350 Highway 80 East
Montgomery, AL 36117