If you paid $1,100 for the water pump replacement and didn't have the tech replace the belt and pulleys at the same time, isn't that on you?You'd think, but I guess not. I paid about $1,100 for the water pump replacement.
I made a list of the parts I plan to have replaced next year.
4627897AB (Serpentine Belt) $30.07
4627851AA (Cooling Idler Pulley) $32.12
4627312AA (Idler Pulley) $22.25
68325057AA (Belt Tensioner) $197.52