Bonitas *********** service.Pathology tests not paid.

My GP sent my wife for pathology tests on 15 January 2021. The GP filled in the BONCAP Pathology request form and only ticked off tests to be conducted from this form. From my understanding these forms are specially reserved for boncap members. Du BUISSON has sent me an account to settle outstanding balance. According to monthly statement bonitas paid for some tests and didn't pay for two tests. The icd code 4182 is on PMB care plan and 4155 is not but GP ticked for test on Boncap pathology request form. I queried this too,why is ICD code not on PMB plan list and on pathology request form. No response to date. I tried from February 2021 sending email after email and every time received a response that query is under investigation and claim is sent to relevant department. After a few days I contact them again via email and get a response that according to records I have been assisted. I asked for Seniors or Directors numbers but they refused to give me contact details. I feel Bonitas are trying to get away from paying service provider.I will not allow this to happen..This is not the first time I experienced this. Bonitas staff are so ***********,they are just shifting responsibility from one department to another. Not happy with the way this matter is being handled. I feel my query is being ignored.