Non-credit of Marriott Bonvoy points on a 3-night stay!

Very disappointed! The hotel did not credit a 3-night stay on my Marriott Bonvoy, even though through e-mails they confirmed that I have been credited the stay. Since then I tried contacting Ms Lilian Makgakga and Midrand Protea Hotel where I stay in May 2023, but my e-mails are ignored and no responses are received!