Clear the coma for cylinder

Does anybody know why my air conditioner went on high makes a screeching slash whistling noise that's extremely annoying and Toyota can't seem to figure it out

 

Is it the blower motor or the AC compressor?
Blower motor- most likely has debris stuck where squirrel cage is, or the cage itself has sperated (I think they had a bad batch of these at one point). Pull filter and look.
AC comp- you'll have to do more diagnosis or try another shop.

 

Does it make the same sound with just the fan on and A/C turned off?

 

Does the noise seem to be coming from within the passenger compartment or the engine bay?

 

No from behind the radio so yes

 

If it's inside the cab, see squirrel cage ideas

EDIT: I see you have a 2021, I'd just take it in for warranty