Uber eats pathetic customer service

I purchased a few items from the Woolies After dark store on Uber eats on 15th January 2025. I ordered 5 items. 2 of which were out of stock. However the full total for all 5 items were charged for. I contacted Uber regarding the refund of the remaining money. They, very convincing told me that it's a holding fee and the remaining money owed to me will be refunded withing 5-10 working days. I contacted them constantly after this to be pushed back n forth regarding the refund. It's 30 days. No Refund. How can you trust a service that cannot guarantee a refund based on the fact that items were unavailable. I shop on Checkers sixty app. Their policy of refund is simply that if items are unavailable. You get charged accordingly to what IS available in your basket. Now I've contacted Uber on the app and I'm not getting anywhere. Is there anyway I can contact Uber and actually email or physically speak to someone regarding this matter. It's ridiculous really.