calling windows service in different namespace

Question

Hi, I have a class library project (say libA) and have a service reference from windows service (say ServiceA). While creating the a class in the libA project, then by default the namespace will be libA. If I change the namespace to anything else other than libA, then I can't successfully create a proxy of ServiceA (error: Could not find default endpoint element that references contract 'ServiceReferenceA.ServiceA' in the ServiceModel client configuration section... can anyone please help?