Steers Jean Len - Owner not processing refund due.

I am struggling to get a refund that is due to me as a result of an order placed via the Steers App to the wrong store on 26/10/2022. When I called the store, Steers Jean Len, they advised that I needed to contact the App guys, Yumbi, which I did and they then advised me that the refund has to be processed by the Store and that they would email them the process of doing the refund. The lady from Yumbi, Samantha Mabuza, confirmed that I should expect my refund within 5 days. She also confirmed via email that she had been in contact with the Store and that the Manager/Owner will be contacting me regarding the refund. 13 days later on 07/11/2022 I followed up by replying to the email received from Samantha at Yumbi, who I must say has been very professional & helpful, She then followed-up from her side and again confirmed that she had again been in contact with the Owner of the Store and who in turn again confirmed that she would personally contact me regarding the refund and when I still did not hear from her by 08/11/2022 I requested for the details of the Steers head office so that I could escalate the matter and was provided with the following 2 email addresses *** & *** and I had escalated the matter by sending an email to them on 08/11/2022 and today, 5 days later I have not received any response, nor even an acknowledgement of receipt from them. It seems like Steers, and especially the store Owner in question is intent on keeping my money and has no intention of making the refund that is due to me as she has failed to keep her promises of contacting me to process my refund.