Mar 31, 2017 06:56 AM|Edward Z|LINK
>> I saw this but mine is a auto generated proxy from wsdl and i don't have those methods to work with
How did you use the generated proxy? I suggest you replace the binding in client side. For my above link, it set below code for service, you could also set it for client binding.
Binding binding = ReplacePrefixMessageEncodingBindingElement.ReplaceEncodingBindingElement(
In addition, the link below shares another way to custom the Prefix.
# Customize WCF Envelope and Namespace Prefix