Pathetic customer service

I have placed a Temu order on the 21st of April and paid my vat & duty on the 26th of April. My order was supposed to be deliverd on the 11th of May but according to my order tracking the vat and duty is still outstaning. I have been phoning numerous times and everytime they ask me to email the proof of payment. After email it more than 7 times already I received an email back to say that I have paid directly to the vendor and they are now waiting for the vendor to pay it over to them. In the mean time 3 days have passed and still no luck. I assume I will have to go and buy party decor at a local shop as my parcel is not going to make it in time.