Have been waiting for a particular toy to come back in stock for DS2's Christmas present. It has just taken me about half an hour to order the bloody thing due to having to exchange my vouchers in one window, then copy and paste all the voucher codes in etc (this was not as straightforward as it sounds!)
I have also now been left with a voucher for £10 which I need to spend before 6 Dec on toys otherwise I will lose it as the toy was £49.97 so I exchanged £25.00 worth to get £50 back and thought I would take the hit on the 3p but, no, I couldn't use the final token as it was 3p too much so I had to pay normally for £9.97 
So bloody frustrating and complicated (not helped by DS1 wittering at me about football whilst I was trying to do it 
)