AmeriCollect Debt Collection Complaint

AmeriCollect Debt collection department,

Medical Improper contact or sharing of info Talked to a third party about my debt Pennsylvania

The collection agency ( Americollect ) was called and payment arrangements were made. 50 % now ( was back on -/-/- in the first call ), 50 % next payment. Collection agency agreed to send balance bill. The -/-/- payment made over the phone was not credited until -/-/- - 12 days to credit it. No balance bill EVER sent or received ( they agreed in a recorded call by them, that they never sent out the balance bill which was agreed ). Yesterday they filed " collection/derogatory '' on my credit reports. I found out today when I CALLED THEM to pay the balance. UNFAIR! The balance is now fully paid, the debt is satisfied.