DMC Debt Collection why are they a bunch of ******

DMC sold my Capitec Loan Account to BLAKE and Associates for collection, in December 2024 Blade called to make an arrangement to pay off this account. For 6 months i paid off that account as per arrangement with BLAKE, they even sent me a paid up letter. Now the problem is with DMC who doesn't want to clear this debt. Why did they send this account to BLAKE in the first place. Please update your system as per BLAKE paid up letter. I've been communicating with Busisiwe from DMC

Thank You. Capitec Bank Personal Loan Account Reference: 25990162 Current Balance: - R27 557 (i was offered a discount by BLAKE so this amount should not be showing at all )