See who's calling

I RECEIVED A phone call at 10. 30 hrs on 13. 08. 2020 from a person calling himself XXXXX. He said he was calling from an online financial trading co. When I said I was not interested he swore at me and hung up. My speaker phone conversation was overheard by my work colleagues. Please be wary of dealing with such a company as the one 2 works that come to my mind are BOILER ROOM.