Pay Out - decreased

Good morning, I have worked 10 years for the same company. Contributing to the UIFund. Lost my job in June 2020 with Covid 19 pandemic. I emediatly app**** for UIF, in June 2020 only to recieve first payment in December. I have recieved a payment every month at a different time an last month only R2900. But I earned nearly R15 000 per month with mean, I should recieve R4000 plus per month for 12 months. I do not understand why only R2900, which is way less.