Incompetence

I have emailed Bonitas queries and claims 3 times now for or my refund of 3 claims owing to me daring back to early January. I submitted the claim invoices but no communication was sent to me saying they need the proof of payments too. I then called saying I must submit the proof of payments. I have now done this and get correspondence that I need to submit the claim invoices. In the email I had stated what are the claim numbers that I am submitting the proof of payments for. This is just incompetence!