Who called from 7158648671

Im getting text messages on my landline coming from this phone number saying, you suck and stop it! I don't know what this is about i just want to know who it is that is sending me these messages!

It's someone named Tina that is looking for free aluminum cans on Craigslist to help pay for her dads medical bills. He's supposed to have lukemia.

She/he sent me some texts last night which I think were intended for someone else "we meeting in the morning?" "U UP" "let me know where"
then the next day some guy called all in a huff asking me a ton of questions "do you know an Angie?!"
bizarre.