You can do something about it. Consider getting a call blocking device (or app for your cell phone)-they're available online and start around $45. http://800notes.com/nb/search?q=call+blockers
Don't wait for others to act-your wait could be long.
Well this is a little weird. Call back gets, "We regret that we are unable to take you call at this time. Please leave a message with your first and last name, phone number and the best time to call you. We will call you back just as soon as we are available. If this is a medical emergency hang up and dial 911. Thank you for your call." I'm guessing one of those medical alert telemarketers????? I'll call during business hours and see what I can learn.