Horrid service delivery.

Delivered less than 50% of my order. After 5 working days (the maximum amount of working days as per their email). Phone to find where was the remaining order. Guess what ? No stock. No notification of not having the stock. And yes I did check my spam folder. I enquire about the refund as that should be the bare minimum for this poor service. Oh we will process it in 48 hours? Now Sheet Street answer this. Did it take you 48hours to take my money. Why could this not have been processed when you realised you had no stock. I have emailed and called but nobody can answer me.