I was sent to collections

I closed my old bank account and I moved my payments to my new account. I never realized that I was getting emails in my spam saying that payments weren't going through. I have now been sent to collections and I need to know if there is a way I can get it reversed. I'm fine with paying fees or whatever but I'm trying to buy a house soon and can't have my credit score destroyed by this. 

Thanks for the help.