Useless customer service so far, I purchased

Useless customer service so far, I purchased
trousers with the hem not sewn on one leg. I sent them back and received notice that they had received the item.
I asked them today when i was going to get the replacement and was told i had to send a photo of the item. its obvious that customer service cannot read emails or they would have read that I sent them back.
After more emails I sent a photo of the return postage and they are supposed to be sending a new pair out on next day delivery,. I have doubts regarding this.