Yourkindfeedbacktomebefore/byWednesdaywouldbehighlyappreciated.
这个是非常正式的商业用语.
如果关系稍好点,就可以用:
Pleasekindlygetbacktomeby/beforeWednesday.
Pleasegivemeyourkindresponseby/beforeWednesday.
Pleaseresponsemebackby/beforeWednesday.
Pleasegivemeyourkindfeedbackby/beforeWednesday.