Why can't I make or receive calls, but can text on Samsung S320VL?

I cannot make or receive calls after running out of minutes and then replacing them. I can text and receive texts with no problems.  My account shows 1500 minutes. All connections are good per Tracfone (spent 3 hrs on the phone with them). They want to replace my phone, but I think the problem is software related.  Removing the battery/SIM card didn't help. 

Hi VermontGirl. Can you try using the SIM card with other phones so to confirm that the issue is within the phone.

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