Never do this again

Okay so i needed the money so i applied with magnum witch of couse has a diffent name when you first apply. So i was trying to pay off the loan and got sent to collactions. A really rude guy calls me harassing me and telling me that if i didnt pay i would go to jail, and he was demanding that i pay him asap, i was mad because Magnum never contacted me to let me know about his. Now i know to never ever get loans