How to diable WCF service metadata post

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C#

I have a silverlight application with 2 WCF services(2 .svc files). Even after I disable the service metadata post, I can still see the service links. For security reason, what I like to show is : Metadata publishing for this service is currently disabled. The following is what I put in my web.config file. No matter what I tried, the service link is always displayed and accessed. Any help will be greatly appreciated!

1.Remove the endpoint configuration for the contract IMetadataExchange

2.Set serviceMetadata httpGetEnabled=false under behaviors\serviceBehaviors\behavior section.