Still no payment

As a service provider, I submitted a claim at the end of December for a patient seen in hospital. After submitting it repeatedly and receiving no response, I called to log and enquiry. I was told that the patient had run out of savings and my claim would not be paid. I explained that the treatments had all occurred in hospital in relation to a PMB condition and thus had to be covered. I was told the claim would be reprocessed for payment. Still nothing. I called again after 3 weeks, explained the issue again and was told that it had not been dealt with correctly the last time and would again be reprocessed for payment (correctly this time). Still nothing. So I called today only to be back to square one in a conversation about savings and PMBs. I was also told this time that I had been using a defunct email address due to a change in administration, something that is either untrue or that every other person I spoke to failed to mention. I am so frustrated and just want to be paid what is owed to me. This is not my first issue with Bankmed and I doubt sadly that it will be my last.