Half order filled, no refund given

I placed an order for 4 pillows. I bought 2x packs, consisting of 2 pillows per pack, which comes to 4 pillows. I bought and paid for 4 pillows but yet 2 single pillows were delivered. When I opened the box only 2 pillows were in the box with absolutely no labeling or packing on them. I emailed and called customer service with no help at all, all they said they will do is investigate the matter but no feedback received or contact received from them at all. I am still waiting on a refund or the other 2 pillows.