The collection was reported by the debt collector, and reflects that they had or have collection authority at some point in time.
The "agreement" was by the original creditor, and not the reporting party (i.e., the debt collector).
A creditor cannot enter into a binding contract that agrees to delete reporting that was not made by them.
Even if they did state that the collection would be removed, it is not an enforceable contract (PFD) limitation since the contracting party did not have the authority to do what they agreed would be done.
Additionally, agreeing to terminate collection authority after payment of the debt is not the same as agreeing to delete credit reporting.
The creditor can agree to terminate collection authority, but that does not mandate deletion of the otherwise legit collection, which was reportable based on collection authority obtained and valid prior to payment of the debt.
CRA policy, as explicitly stated in their common credit reporting manual, clearly instructs debt collectors NOT to delete their credit reporting based on payment of the debt.
Deletion of a reported collection is only stipulated under CRA policy if the creditor terminates collection authority PRIOR to payment of the debt. When the consumer pays the creditor, that payment alone terminates continued collection authority, and thus the creditor does not terminate prior to payment of the debt, and cannot retroactively terminate after the fact of payment.
Pursual of deletion by the debt collector is by way of a good-will request directed at the debt collector, and not be enforcement of any contract provision "agreed to" by a party who has no ability to delete.
