Terrible customer service

Even one star is too much. Ordered items from Shein online in May 2022 and Buffalo Logistics was allocated as their courier service. Item was received by Buffalo on 13 Jun 2022, but I did not receive the item. I called them at the end of June to enquire. They said the parcel is under investigation and they will get back to me. I called back in July again. Same story. I called again in July to ask what's the issue, they then say the parcel has been tampered with and they will try to get a new delivery. I don't hear from them again. I check with Shein and they offer a refund, which I get within hours. However, they said I need to contact Buffalo directly for the courier refund. Buffalo gives me the run around. They want proof of payment. lol!!! It's a small amount - R105. But it's the principle. How many other people do they do this to? Not once have they called me on their own to give an update. Sad customer service.