Worst company called me for a few days, everytime ...

Worst company called me for a few days, everytime I would answer they would hang up so I called back lady was very rude saying they sent multiple letters to me and my account was going to be sent to my credit the next day I agreed to pay then she said no matter if I pay it will go to my credit since it was past 5:00pm so I said what's the point to pay she placed me on hold then another agent got on the phone I was very confused and asked why I was transferred she said the last agent said you requested a manager and she was the manager a month later I finally get the collection letter and called again just my luck I get the same agent and she said like I told you before it was sent to your credit and started acting rude I send well I barley got the letter that's dated July 21 she called me a lier at that point I hung up guess my credit will be crap over 100$ and a crappy collection agency