Call blocker might be of some help. Also don't pick up on numbers you do not recognize, or where there are caller IDs that seem odd. Or where there is no caller ID. This website is basically for exchanging information.
OMG!!! This is getting ridiculous!!!!!!!!! Every day I get a recorded call from either "Amy" or "Scott" that says "can you hear me ok". This is nuts because I marked them as spam and they keep changing their numbers!!! I have so many spam entries in my phone for these people its not even funny! They call saying you requested social security benefits lol!!! I didn't request anything! I am sooooooo frustrated and tired of these calls I am ready to change my number. This is absolutely inane!