Goods not collected

I bought from Shein and Buffalo delivered. When I discovered that some of my items don't fit, I then app**** for return of goods the same day they were delivered, that is 10 December 2024. I then got a message that said "pick up application has been submitted successfully, Buffalo will call you within 7 days to arrange a pickup". Then after that I received a Tracking number. After 7 days without receiving a call from Buffalo, I called them. It kept ringing but no answer. I kept trying but did not succeed. On 08 January 2025, I called and guy called Simphiwe picked up. After I explained he said he will escalate and the driver will be arranged and sent to collect my goods, but nothing happened. On the 9 of January I called again and I spoke with Ferdinand who said the same thing as Simphiwe. I gave it a few days but nothing happen. I called again on 13 January and I spoke to Angelina who said she will escalate and my goods will be collected. Nothing happened. I called again on 15 January and spoke with Kagiso who said the same thing. I then asked Kagiso to transfer me to his Supervisor, he asked me to hold but after a few minutes he came back and told me she was busy on the call and that she will get back to me. When i alsked Kagiso his supervisor's name, he told me it's Christine. Christine never came back to me and no one contacted me till now.. Shein has a condition that when goods are not returned within 30 days of receipt, they will not do refund. I'm sitting with these items that I can't even use. This is disappointing.