Horrible delivery company

I placed an order with Shein on the 6th of November and Imile logistics has been delaying my order after I paid the duty but nothing is changing. When you call them it's either their number doesn't work, they don't answer or they tell you "they are trying their best" where as nothing is changing. Shein should just remove Imile as one of they delivering company's and continue with Buffalo because this is nonsense, I should have received my order by now.