offer to sell

They have been calling and I am ignoring the call.  They never leave a voice message. When I try to call the number back to see what they want it just gives me a busy signal.  They call a couple times in a row in the morning.

KHI ABOUTH  THE NUMBER 30 58 08 36 17  THE NUMBER IS FROM  PREPAID CALL

I MENS  NO IS FROM  SOME PERSON OR HOME  THIS NUMBER  USE THIS COMPANI TO MAKE THE INTENATIONALS CALL OVER SEAS ME GIRLFRIEND CALL ME FROM MEXICO TO CHINA  AND  ME MOBIL PHONE IDE SHOW ME THIS NUMBER 305-808-3617 BUT I NOW THAT IS NOT THE NUMBER OF ME GIRLFRIEND.

BE AWARE OF THIS NUMBER THE FLORIDA POLICE DEPARTMENT IS TRACKING THE USES OF THIS "LAND LINE"

Got a call from this number, what is it??  Telemarketers??