Disappointed client

I made an order on the 12th of march and was confirmed to deliver from the 19th, paid vat&customs on the 14th. The only communication was on the 22nd after unlimited calls I made. On they promise to deliver on the 25th. I got an email on the 26th that my parcel has been delivered to my address and was given to Emerly around 17H30. There's no Emerly in the house. I phoned them the following morning and spoke to a lady and she said she will investigate because they do not deliver after 5pm. That was the last response I got from Buffalo international logistics. They not responding my emails and they not taking my calls. Now I just want my refund for the next order I'm yet to pay vat and customs. They do not even have a complaint or contact platforms. Once the money is gone, just forget.