Poor Service on resolving accounts isssues

Lancet submit claims incorrectly to my medical aid so when the claim gets rejected they bombard you with emails, sms etc. I have called their call centre and nobody will call back or respond on resolving the issue but their system will continue to send sms and emails about outstanding balances and for a person whom keeps all their accounts up to date with payment, this becomes really annoying. My first issue is that they submit the to the medical the same description and code twice for a specific test twice so the medical does not pay then they do tests that are for females which are for fetus and placenta on a male. The medical aid rejects payment as I am a male, I ask Lancet for assistance on why this happened but nothing just more demands for payment on arrears which is because of their inability to resolve the matter. Over the 2023 period Lancet received alot of business from myself due to my poor. Please take the time to resolve my issues urgently.