Extreme shocking service

I settled my account a week ago, which i then called and was advised the settlement will reflect within 48hours. I called today to follow up as its been more than 48hours which i was passed around for 30 minutes from collections who are saying the account is with Debt Review to the Debt Review department saying the account is not with them.

Your agents worse are then are completely rude and just transfer the call without understand anything. Can i just simply get my loan account closed and receive a settlement letter.