关于inform sb of sth

题目

关于inform sb of sth
请问这两句话到底哪一个是对的,
1,We have informed the relevant officers to contact the customer and provide warranty service for him
2,We have informed the relevant officers to contacting the customer and provide warranty service for him.
到底是用contact还是contacting?

答案

都有错误吧.用contact.provide改成have provided和前面保持一致.