Stamps agent commission

I became a Shoprite agent for stamps around this time in 2023. Last year, I received my commission around the 15th of December. This year, I sold more stamps than the previous year and submitted my documents in November as advised. Today is the 19th of December, and I have not received any communication or payment. Over the past two weeks, I have called the head office multiple times, but I have either been placed on hold for more than 15 minutes or given unclear responses. I was informed that Robin or Ezel would contact me after taking my details, but I have not heard back. On Tuesday, when I called to complain, I was transferred from Customer Service to the Lentegeur Shoprite branch. I spoke to the manager, Jerome, who also took my details and promised to call back. Yesterday, after another call to head office with no response, Jerome told me he had asked the admin person to contact me. He again took my details and assured me I would receive feedback, but I have not received any communication to date. I am concerned about the delay and lack of feedback, especially since I submitted everything on time and exceeded last year’s sales. Please confirm the status of my commission payment as soon as possible.