Called my home phone repeatedly with just beeping. Called number back. Blue cross blue shield unused extension

Fax beeps

Some makakas are calling my fax line from 209-367-5000 and 916-350-6001.
How could those animals from blue cross or blue shield be stopped?

How these blue [***] are allowed to annoy people without any fear or accountability?

17 fax tones to a voice line in one day.  How can I make it stop?

I just updated my easy pay information with Blue Shield via Fax and missed a field that the form needed. I kept getting calls from this and another Blue Shield fax. It appears that they fax back to inform the subscriber of an error with the form.