Request for removing the comment of the phone number

They have called my wife's cell number 4 times in the last week. English is her second language. THe last time she said the message was, "If you want the FBI to protect your home for free. PmWqKQpush 1, otherwise push 9 for no more calls." She did not have her glasses on and could not find the 9.
She cannot have her cell phone on at work so they just keep calling. I am going to switch phones to notify we do not want their call. I did not know the FBI would protect our home for free.