Calls telling me I better send $200 or they will call immigration.

Calls me telling me and my husband that we need to purchase books to learn english.  they are free for 30 days and then 200.00.  Same person that's also reporting to be immigration and that if we don't pay 200.00 they will call immigration.  Well go for it cause i'm american.

Do not answer these phone calls

These people called my mom and threatend her by saying she neede.d to pay for some books to learn english within 10 minutes they were goint to call the police.  Luckally I Googled the phone number and found that it seems to be a scam.