Or, more than likely, it's a scam and someone is trying to steal your money. A LEGITIMATE debt collector MAILS proof of a debt and doesn't resort to threats.
By the way, if you know who this Jackman is and who this number belongs to, why are you here? this is a website to help identify unknown phone numbers.
Called me, asked me my name, I told mr. Jackman my first name and he told me that I wasn't an adult because I didn't tell him my full name. Finished insulting me and then hung up on me.'all while I still
Have no clue who this person is or why they are calling me, I call [***] on their reason of calling.