I bought a computer from Currys last year, I had to wait for over an hour to get any sort of help, though the woman who eventually helped me was fine. Almost no staff in our local large Currys now, very long waits at all times both for service and at the tills. We bought a mobile for my husband, they had to order in what we wanted for "next day delivery" which took well over a week. We're still not sure if it was actually in their stock room for the whole time as nobody seemed to know how the system worked.
The only part of our store that functions properly is the one selling small electrical good, it takes up the whole of the mezzanine floor and has just one salesman. Fortunately he knows the stock inside out and is reasonably quick, but he has to go through all the scripted rigmarole of trying to sell you an extended guarantee and any extras that he can. We never go there at weekends or at lunchtime, you could wait all day.