Lancet: Debt collection demands despite payment and repeated requests for clarification

I am extremely frustrated with Lancet Laboratories' account administration and the difficulty in obtaining a clear explanation of amounts allegedly outstanding.

On 4 August 2025, I paid R401.10 to Lancet through Payfast. I have the successful payment confirmation, and both the amount and account reference match Lancet's original payment request dated 21 July 2025.

More than a year later, I am receiving debt collection demands from Sustainable Collection Services for R1,818.80 against that same ***, without a clear explanation of how this balance arose.

Adding to the confusion, other recent demands and correspondence use different account references. Since 29 September 2026, I have repeatedly requested a full account reconciliation showing the original invoices and all payments and adjustments. I followed up again on 7 and 12 October, but the matter remains unresolved.

I need to understand what is being claimed and ensure that payments already made have been correctly allocated. Receiving collection demands and threats of further action while trying to obtain this basic information is deeply frustrating.