I guess "coyeo" might be "jo yeo" meang "저요?" and "cha ge yo (차게요)" would be "please make it cold" like beverages or coffee.^^
Here is what I thought.^^
(In a cafe)
A: 커피 어떻게 해드릴까요?
How do you like your coffee?
B: 저요? 차게요.(차게 해주세요)
Me? Ah, please make it cold.
^________^