Buffalo international logistics not delivering my clothes and not answering my calls, emails and whatsapp. I've already paid them for customs yet they cannot deliver my things on time

I have ordered clothes from Shein on the 25th of March 2024 and they were dispatched to Buffalo logistics, they were updating me regarding the tracking of my order until the 7th of April, till this day I don't know where my clothes are and I need them as I'm leaving on the 18th of April to Mozambique. When I contact Buffalo logistics on *** I hold the number rings to no answer for 20 to 30 minutes which I endup hanging up cause my airtime goes to waste as they do not answer their phone, then sent an email to ***, which was never answer till this day and their whatsapp number *** you don't get response and you get the auto reply that the things will be delivered in 3-5 working day. Even when it's 7 days later. When I try to track my clothes their auto reply says there has not been any tracking update in the last 4 days, which is a lie cause it's been 7 days already.. When I communicate with Shein from Thursday they say they are still waiting for response from Buffalo logistics which is weird because they also cannot get answers from the company they are working with. How are we supposed to trust Buffalo logistics. I just got a message on my Shein app saying I'll get 100 point for the inconvenience yet that will not work as I need my clothes that I paid for since I'm leaving on the 18th to Mozambique, will I wear 100 points and I don't have money to buy clothes again. Buffalo logistics is too quick to make us pay for customs but they cannot even deliver my things on time. Shein told me that if I do not receive my things by the 17th, I must log another complain, how is that going to help me cause I'm leaving on the 18th. Buffalo international logistics is not reliable. I need my clothes by the 16th cause they are going to spoil my trip. I'm stressing about my clothes now. BUFZA***YQ