Can't get webservice to work - VIES checkVat WSDL

Question

I'm trying to incorporate a VAT checking function in my website, for validating entered VAT.
This service is granted by european Vies WSDL service.
No matter what I try, I always get the same error:
Web service operation checkVat with parameters {xx,xxxxxxxxxxx} cannot be found.
This is the last code I tried (maybe the fifth or sixth method experimented),
just straight from the Coldfusion documentation:
<cfscript>
    ws = CreateObject("webservice",
"http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl");
    ws.checkVat("xx","xxxxxxxxxxx");
    req = getSOAPRequest(ws);
</cfscript>
<cfdump var="#req#">
<cfset soapreq = GetSOAPRequest(ws)>
<h2>SOAP Request</h2>
<cfdump var="#soapreq#">
<cfset soapresp = GetSOAPResponse(ws)>
<h2>SOAP Response</h2>
<cfdump var="#soapresp#">
Where red x represent country code and VAT number.
I'm about to let down, three days spent in trying and still no luck.
Someone willing to bang his head with mine?
Thanks anyway.

Answer 1

1) Tried last code, and this is the complete resulting error:
Web service operation checkVat with parameters {VATNUMBER={244155576},COUNTRYCODE={GB}} cannot be found.
The error occurred in C:\xxxxxxxxxxxx\cfm_test\14_piva_test.cfm: line 22
20 :    refreshwsdl="yes"
21 :
22 :    returnvariable="ws_response" argumentcollection="#arg#">
23 :
24 : </cfinvoke>
Resources: •Check the ColdFusion documentation to verify that you are using the correct syntax.
•Search the Knowledge Base to find a solution to your problem.
Browser  Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
Referrer  
Date/Time  29-Sep-14 05:20 PM
Stack Trace
at cf14_piva_test2ecfm1274206001.runPage(C:\xxxxxxxxxx\cfm_test\14_piva_test.cfm:22)
coldfusion.xml.rpc.ServiceProxy$ServiceMethodNotFoundException: Web service operation checkVat with parameters {VATNUMBER={244155576},COUNTRYCODE={GB}} cannot be found.
    at coldfusion.xml.rpc.ServiceProxy.invoke(ServiceProxy.java:147)
    at coldfusion.runtime.CfJspPage._invoke(CfJspPage.java:2210)
    at coldfusion.tagext.lang.InvokeTag.doEndTag(InvokeTag.java:417)
    at cf14_piva_test2ecfm1274206001.runPage(C:\xxxxxxxxxxxxxxx\cfm_test\14_piva_test.cfm:22)
    at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:192)
    at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:366)
    at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65)
    at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:279)
    at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:48)
    at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40)
    at coldfusion.filter.PathFilter.invoke(PathFilter.java:86)
    at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:70)
    at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:2 8)
    at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)
    at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46)
    at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)
    at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)
    at coldfusion.CfmServlet.service(CfmServlet.java:175)
    at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
    at jrun.servlet.FilterChain.doFilter(FilterChain.java:86)
    at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42 )
    at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
    at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)
    at jrun.servlet.FilterChain.service(FilterChain.java:101)
    at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
    at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
    at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:284)
    at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
    at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
    at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
    at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
    at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
    at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
2) in log files i've only found this:
Web service operation checkVat with parameters {VATNUMBER={244155576},COUNTRYCODE={GB}} cannot be found. The specific sequence of files included or processed is: C:\xxxxxxxxxx\cfm_test\14_piva_test.cfm, line: 22