Need clarification in removing web.arg0 tag

I have developed web service and created class for sending and receiving the request and response. I am calling the method as Responseclass methodname(Requestclass) example Myresclass Getvalue(MyReqclass arg0)  and I can able to see all the tag formation is correct as per my variable define in requestclass, In addition to that one more tag is formed in start and end of the request.

<web:Getvalue>
<web:arg0>
<Email>test@test.com</Email>
<Name>Kalam</Name>
</web:arg0>
</web:Getvalue>

I want to remove the <web:arg0> tag.

Thanks in advance.