I am getting timeout expired when running a sql stored procedure using WCF

I am getting a message after starting a stored procedure which never came back. The message indicates "Timeout expired or server is not responding". Where can I increase the timeout (the stored procedure is expected to take more than 2 hours.

The web.config file Service model section is as follows:

      <system.serviceModel>
            <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>      
            <bindings>
                  <basicHttpBinding>
                        <binding name = "secureMsg"  maxReceivedMessageSize="4194304">
                        <!-- 4 MB -->
                        </binding>
                  </basicHttpBinding>
            </bindings>
      
            <services>
       <endpoint
                          address="IdeaUtilitiesFacade"
                          binding="basicHttpBinding"
                          bindingConfiguration="secureMsg"
                          contract="Reinsurance.Application.IdeaUtilities.Interface.IIdeaUtilitiesFacade"/>
     </service>
            <behaviors>
                  <serviceBehaviors>
                        <behavior name="Debug_Behaviour">
                              <serviceDebug
                                    httpHelpPageEnabled="false"
                                    includeExceptionDetailInFaults="true"
                              />
                              <serviceMetadata httpGetEnabled="false" />
                              <serviceAuthorization principalPermissionMode="UseWindowsGroups" />      
                        </behavior>
                  </serviceBehaviors>
            </behaviors>
      </system.serviceModel>