When I go to a contact on my Evo 4g and select 'send to voicemail' it doesn't seem to send them directly to voicemail. My phone doesn't ring but the person calling can still hear the 5 or so rings before it send them to voicemail. When I select 'send to voicemail' through Google Voice it sends them directly to voicemail. Is there a way to fix this on Anroid?