Yes, the junk mail is offensive, but considerably less so. I can always deposit it into the trash. I can turn off the radio, or distract myself with something else. Email is deleted with the click of the mouse.
I should have the right to determine what enters my home or business. To be distracted with marketers who interrupt my work is extremely rude. If I was meeting with you, and our meeting was disturbed by these calls, you would find it irritating and offensive. The trouble is that I do not know this is solicitation from the caller ID, and must answer in case it is important. I should be able to block marketing calls.