Failed delivery attempt after notification of non delivery over weekends

Not sure how this delivery service works, my order was out for delivery Thursday, 15 June, I didnt receive the delivery by 5pm and notification was sent stating no delivery will be done on public holidays, Saturday and Sunday, I contacted the buffalo WhatsApp messenger and ask when I will receive my delivery, their response is that I will receive my order the next week. I leave town and Saturday I received a notification that my delivery was attempted however unsuccessful due to vehicle issues. Sunday afternoon while driving back from our of town I received a message stating my delivery is outside, to which I responded that I am still traveling back. Monday morning I received an email from Shein with an update of yet another failed delivery attempt. Why is this courier service providing misinformation,if you notify me that delivery will not be made, why do your delivery guys take the orders and deliver. I'm baffled, I'm still waiting for my delivery with no response from the buffalo WhatsApp messenger and no response from the buffalo email requesting feedback on when I will receive my order