TFG delivered the wrong item

Hi so I ordered 4 pairs of shoes from their online store and all of them came at different days after 3 weeks except for one. So when the last sneaker arrived, it was the wrong pair. I then notified them via email and even called them to which I had to hold for 18+ minutes. The lady said she will contact me via email and I've not heard from them ever since. It's been a week now since I've logged the first call and email. Is there any other way I can deal with this because the shoe I got it's waaaay to small and it's for a female