Very bad customer service

My SHEIN order has been long overdue for delivery and there’s a lot discrepancies on the tea information. Initially Buffalo claimed that the my physical address and phone number were not correct, hence the delivery failed. However, this wasn’t true as my details are indeed correct. Their WhatsApp number does not exist, one of the landline number on their website says it’s no longer in use when trying to call it. Managed to find a number on the tracking details, spoke to the agent who said the order would be delivered by the 12 of April but sadly that has not been the case. I wouldn’t recommend this company as they are non responsive to queries and keep making promises that they keep breaking. I would appreciate it if my parcel could be delivered ASAP