Got a call without a voicemail message

Unknown caller. Left no voice mail.

MADD asking for a donation

Have called now twice today. No Message left. Called it back M.A.D.D. Canada, Mothers Against Drunk Driving. Obviously phone soliciting.

Called said that I signed a Facebook petition,  I asked when, caller was not able to tell me.  I asked when the petition was started, again she could not tell me details.  I do not ever give a phone number to anyone and I do not sign up for anything on Facebook.  When I asked how she got the phone number she could not answer.  I was completely polite during the entire call, I listened to her scripted promotion in its entirety.  I then politely told her I did not wish to make a contribution and could I be taken off their call list.  She hung up on me!  I am a big supporter of MADD, I think that they are an invaluable organization, however this was bad form.