WSDL Cannot find dispatch method for

This typically means that the SOAP framework could not find the operation that should be invoked via this request. A SOAP framework typically inspects the message to find pointers about how to route the message to the operation. Reasons for this error are mostly configuration issues (different namespaces, different encodings (RPC vs. doc/lit), usage of WS-Addressing vs. plain SOAP etc.)

I had a similar problem and struggling, googling for 1 day. But it was a simple mistake that instead of:

{http://ws.somecompany.com/services}ValidateUser

It should be

{http://ws.somecompany.com/services/}ValidateUser

I had not checked my WSDL clearly.