Looking on the internet deeply has found these results:

please contact is the most popular phrase on the web.

please communicate 11,150,000 results on the web	please contact 1940,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	If you or anyone has any information on this dangerous criminal, please contact your local authority. Now, if you have, please contact... In such cases please contact the manufacturer of your product. For any information about this veterinary medicinal product, please contact the local representative of the Marketing Authorisation Holder. For more information, please contact the local representative. In case of problems please contact the relevant service provider. Should you have any further questions about the Committee's work please contact the Secretariat. In case of emergency, please contact...

please communicate

11,150,000 results on the web

please contact

1940,000,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

If you or anyone has any information on this dangerous criminal, please contact your local authority.
Now, if you have, please contact...
In such cases please contact the manufacturer of your product.
For any information about this veterinary medicinal product, please contact the local representative of the Marketing Authorisation Holder.
For more information, please contact the local representative.
In case of problems please contact the relevant service provider.
Should you have any further questions about the Committee's work please contact the Secretariat.
In case of emergency, please contact...