Hi,
Thanks for sharing your requirement here at Freelancer, I will be more than happy to help you.
I understand that you have WSDL API and have written method definition in php but somehow it's not working, so if you allow me to look into it and fix then will be great.
I would like to mention that I will take payment only after completion of this job, I will first finish the job and then I will ask you to award and pay at the same time to maintain trust.
Regards,
Kapil