Hello do you guys offer Mechical keyboard support as in, can you guys help me switch the switches in my keyboard?

For something like this, you should probably speak directly with someone in the Geek Squad dept for more info and pricing.

Geek squad should be able to help you out with that. Right now, in-store is open 11am-7pm

There is a program called Geek Squad in best buy for $199 for a year. They help with all the products you have bought from best buy. But I am sure they have cheaper program too where you can get one item repaired (may be you need to get the protection for the device to leverage it).