I just got a call from the same number. No one answered my "hello"/ I decided to check it on the internet, and then saw all the posts. NEVER PRESS ANYTHING WHEN ASKED TO. IN THE PAST IWAS TOLD THAT IF SOMEONE PRESSED ONE, THOSE WHO CALLED YOU GOT CONNECTED TO YOUR LINE, AND MADE CALLS AT YOUR EXPENSE!!!
Who ever this is calls and calls and never says anything and calls back result in nothing. Am reporting number to do not call register, lucky I am registered on it as are all our phones.