Woolworths SLOW online shopping

Woolworths computer system is so SLOW that the client can end up clicking more than once and end up paying and receiving more goods than required. Very inportant to check basket before checking out. As much as I love meuslei rusks I do not require 6 bags and I also ended up with 4 packs of cheddar cheese when I only required one. This morning I have selected all the products I require and click checkout, Woolworths asks to confirm delivery address, I click confirm and that was about 30 minutes ago. No reply from Woolworths. I will now get what I require from Checkers. At least their system works and you get a response in less than an hour.