Lazada complaint: lazada staff stole my returned item

1. Seller scammed me by sending Samsung A71 instead of Samsung S21 so I repacked it all and took a photo of me returning it to the LEX return courier as proofs
2. I returned the items completely and on time to LEX courier including the original packaging and the freebies
3. Warehouse/return hub stole/lost the mobile unit that is included in my return
4. Lazada rejected my refund
5. Lazada returned to me the item without the mobile unit inside and the original packaging is gone making me unable to dispute their rejection
6. I chatted Lazada customer service and supervisors thru their live chat asking for assistance since October 30 but until now, I keep getting instructions to just wait for 24-48 hours or 48-72 hours only to find out that my case has been closed without feedbacks or refunds. It has been happening over and over since October 31, case open, case closed, case ope, case closed.