Got a call from this number twice, which I missed.  After the second call, I call back and ask the lady which company is calling on behalf of.  She refused to disclose this info and asked me for my name instead.  I refused as well, and she told me I don't need to call them if I am not telling them my name.  Well, the opposite is true too, I said and hanged up.  Two minutes later I got a call from a blocked number (I didn't block my own number when I call them) but I didn't pick up.  On the same day, a number with id 888-944-4425 also called and it's known from google searches that this number relates to a debt collection company.  Of course i have no late/default debts.