@nukemben Let us know your order number at the two links below tomorrow morning and we will be happy to chase this up to try and get this processed for you, so you can get everything back up and running ASAP.......
https://forums.overclockers.co.uk/community/order-queries.118/
https://www.overclockers.co.uk/contact
While I don't have the exact wording on the site when an order is placed for shop collect, I'll be honest here and say that there's been all sorts of unusual comlpications over the last 2 years, such as staffing in smaller spaces/aisles while maintaining social distancing, problems with supply with many components requiring semiconductors/chips, moving to new website, etc. But on the other hand, reasonably an order for an in stock CPU cooler that you placed fairly early in the day (from what you've said) shouldn't be an issue to be ready for collection tomorrow either, and we'll do our best to get this sorted for you.
Regarding automatic email, it may be that messages about collection or contact Mon-Fri are either referring to phone-line opening hours, or are an older email message that has been resurrected (a possible glitch on the new site, that if so, thank you for reporting) with the move to the new website. Things have been a little bit in flux, as has most of the world, to be fair.
However, in the morning, our sales and warehouse teams, we'll do our very best to get this sorted ready for you tomorrow wherever possible, so it should be fine to collect Saturday, to get you back up and running. If you can "@" quote me in to a message in the Customer Service forum, where you list your order number please, I'll try and look into this and give our warehouse team a gentle (or less gentle nudge too, as you are travelling a little further) to get this processed and sorted for you.
I hope the cooler sorts everything for you.
Best Regards
Seabiscuit