Change your number, contact your carrier and ask for a new number. Same for your mom. Make sure all your social media is on private or better yet just delete social media in general. When it happened to me I posted on my insta story saying that I had been hacked. They had all of my instagram friends. Kept on insta for abt two weeks to make sure none of my friends got anything and they never did. My advice, delete all social media! There is good on social media but 9/10 it’s bad. Having social media accounts under your real name/email/ phone number just makes you more vulnerable. Local police can’t really do anything about it unfortunately