Poor Referal service

In November 2022 I referred my colleague to buy a new Toyota starlet from Toyota polokwane (I asked her to mention to the sales person that She was reffered by me, of which She mentioned to Mosima who assisted her) After a week I ask my Colleague to inquire from Mosima when my refferal omission will be paid(my Colleague asked her right in front of me via whatsap voice note, Mosima hadn't reply).I then reguested Mosima's cellphone number from my colleague,on 12 December 2022 I sent her a whatsap message that I am the person who reffered the client to her,I asked when will I get my refferal commission,Mosima rep**** by saying "she forgot to load that the client was reffered") I indicated to her that very error can be fixed, Mosima just blue ticked me and never responded. On 16 December 2022 my Colligue indicated to me that Mosima said I should send her my IRP5, I'd copy and back statement for the payment to be made, on 19 December 2022 I sent Mosima the required documents via whatsap of which she Just Bluetiked and never acknowledged receiving them. on 20 December 2022 I made followup with Mosima and indicated that though you only blue ticked me hopefully you received the required documents, her reply was let me check and She never got back to me. on 22 December 2022 I made followup again with Mosima to check when will the payment be made, I even Indicated to her that She hadn't treat me with courtesy at all and Informed her that I have 3 Friends who needs Brand new Toyota cars of which I doubt if I can still refer them to her. I asked her or should I make a formal complaint with your Head office so that the payment can be made, She Blueticked my message and never responded.