DO NOT ANSWER PHONE....DO NOT CALL BACK....THEY DON'T CARE..
THEY ARE FISHING FOR VIABLE PHONE NUMBERS AND WHEN YOU ANSWER THAT JUST VERIFIES YOU OWN THE PHONE......DON'T PRESS "1". Either . That lets them get more info....they then sell your number to other companies and you wind up getting more calls. It's annoying for sure but just let it ring, after awhile calls will decrease....I only get maybe 3 a week. Now...just steel yourself, don't answer, check your caller ID. Most of the time they are robocalls....why do you think most don't speak.....they just want viable numbers which you give them when you answer or call back.
I called the # and got a recording for MDS Telicommunications a fund raising company. Didn't answer the call when first called. If they aren't willing to leave a message I won't call back till after hrs when i'm bored and haven't anything better to do....
Called my cell. I didn't recognize the number but it came up as San Francisco, CA (I live in the Midwest) and I have family there so thought it was them calling from their job (hence the number I didn't recognize). A recording told me to "Stay on the line to talk to one of our agents". I immediately hung up.