Shein Return Policy Made Me Concerned About Payment Security

I ordered three clothing items from Shein last week, but they are not true to size, and I do not like how they fit, so I decided to return them and request a refund. When I contacted Shein to arrange the return, I was surprised and concerned that I was asked to provide my credit card number. I find this request very worrying, and it makes the interaction feel like potential fraud, especially since the purchase has already been completed and they should not need my full card details again just to process a return. Because of this, I do not feel safe sharing such sensitive information, and I have not been able to complete the return process. I request that Shein process a full refund for these three clothing items without asking for my credit card number again, and that a secure and standard return method be provided so I can send the products back safely.