Nexus 4 switched to Striaght Talk (Tmo). Voicemail issues with Google Voice. HELP.

Hi all,

So, i just switched to Striaght Talk $45 plan with a Tmobile sim on my Nexus 4. I always give out my Google Voice number. So, I just want to be able to disable voicemail on Straight Talk. Right now, I have a new voicemail notification icon on my phone, that just never goes away. I have not done the setup voicemail box steps btw.

This is really annoying. Please someone tell me what I can do.