Touch Pro problem or sprint service problem?

[mikenerd]

I just got a Touch Pro with new Sprint service 2 weeks ago and have a issue where 1 in 15 calls in my house goes straight to voicemail. I have never looked at my phone and seen no bars. I always have between 1 and 5 and have not dropped a call in my house. This is the second TP as the first had a screen problem and this has happened with both. I have asked the callers if it rang or if it went straight to vm and they say the phone rang like normal. I called tech support twice and they didnt have an answer. Anyone have any ideas?

I was thinking of trying to get a free airave or maybe trying a different radio...