Lancet ****ming clients to pay after bill was paid

I am writing to express my concern regarding the persistent communication from Lancet demanding payment from a client, despite the fact that the medical aid has already settled the bill. The client has made multiple attempts to resolve this issue through email, but unfortunately, there has been no response. Furthermore, calling the call center has proven to be an unhelpful and frustrating experience. This situation is causing undue stress and inconvenience. I kindly request that the complaints department address this matter urgently to prevent further harassment and ensure proper communication channels are established. Thank you for your prompt attention to this issue.