Polmed does not pay out claims even though there are approved authorisations.

We are a practice that provides medical devices to patients. We currently have 5 claims with Polmed that they have still not paid out even though there are approved authorisations for the. One of our Polmed claims that has still not been paid goes back as far as July. Polmed has the approved authorisations on their systems, but then they ask us to send it to them. It's ridiculous! How is it possible that claims that have approved authorisations takes so long to pay out? Shame on you Polmed! This is horrible service!