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I advise them to contact you directly in case they have any question. is the most popular phrase on the web.

I advise them to contact you directly in case they have any questions. 1250,000,000 results on the web	I advise them to contact you directly in case they have any question. 1859,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It's up to them to contact you, for their safety. This, in case we need to contact you, is a pager. The show has to contact me in case they change the schedule. It's better that you stay here in case Joey tries to contact you again. I told them to contact us in case they find her. Ms. Langton, Vic will stay with you in case they try to contact you again. He said to contact you only in case of emergency. We figure the best thing for you to do is stay inside, in case they try to contact you.	He said to contact you only in case of emergency. It's up to them to contact you, for their safety. It's better that you stay here in case Joey tries to contact you again. We figure the best thing for you to do is stay inside, in case they try to contact you. Ms. Langton, Vic will stay with you in case they try to contact you again. This, in case we need to contact you, is a pager. I told them to contact us in case they find her. The show has to contact me in case they change the schedule.

I advise them to contact you directly in case they have any questions.

1250,000,000 results on the web

I advise them to contact you directly in case they have any question.

1859,000,000 results on the web

More popular!

It's up to them to contact you, for their safety.
This, in case we need to contact you, is a pager.
The show has to contact me in case they change the schedule.
It's better that you stay here in case Joey tries to contact you again.
I told them to contact us in case they find her.
Ms. Langton, Vic will stay with you in case they try to contact you again.
He said to contact you only in case of emergency.
We figure the best thing for you to do is stay inside, in case they try to contact you.

He said to contact you only in case of emergency.
It's up to them to contact you, for their safety.
It's better that you stay here in case Joey tries to contact you again.
We figure the best thing for you to do is stay inside, in case they try to contact you.
Ms. Langton, Vic will stay with you in case they try to contact you again.
This, in case we need to contact you, is a pager.
I told them to contact us in case they find her.
The show has to contact me in case they change the schedule.