Savings refund not paid

I changed my medical aid option last year in November 2023 and have a savings refund due of R12200. I was told the usual story that it will take 4 months to process. In January 2024 I did a follow and was told to submit proof of bank account as well as filling out a savings refund form. To my surprise no payment was issued in April and I did another follow-up in May and was told to submit the same forms of which I did. On the 20th of May I received an email with a reference confirming that my payment will take 5-7 working days but now on the 4th of June still no payment. I wrote another follow-up email which was not responded to on the 3rd of June and now seeing the reviews on Hellopeter.com I see that Bonitas is famous for not paying savings refund as my complaint is not the first. I will be considering legal advice because I've been with Bonitas for years to be treated in such a way when I'm supposed to receive what's due to me