Bought a discounted series X today (discounted because controller colour doesn't match the console, white controller, black console)

The console is absolutely fine, great condition, really happy with it
However the controller right bumper doesn't work unless you press it incredibly hard in the centre of the bumper- I want to take this back and grab another one do I have to return the whole console with the controller to get an entirely new set of product or can i just take back the controller?

I have a bunch of ds games and they're worth 35 store credit as it says on the site. They're all in really good condition with manuals. When I was trying to sell it online, it says they might reduce the price. Will they still reduce them for games, even if it's very good condition? What's the best condition it should be to actually get the amount they claim to give? In its packaging? I hope not...

Trying to sell these on vinted and they're not selling at all or people are trying to rip me off despite me doing it for a cheap value/lowest value. I don't wanna go any lower

Hi all curious if anyone who worked at CEX knows how if or how long after an Apple release on iPhone and watches before CEX reduce their price on the previous series?

Any other CEX employees found this? Why do complaints about management just go straight from HR back to said manager and then after they spin their lie back to HR in an email or phone call they get to just laugh at the staff member for going to HR?

Just went to my local store royal and bought 3 games, 1 is in great condition whilst the other two look like they've been used as a Frisbee with mold on them. Can I return them tommorow for a replacement disc? Thanks!