Had a balance in my account last month now nothing. What gives???

It expires beyond a time limit.

i was told it does not expire I know that it will expire after 90 days of of inactivity.

use it or not it expires.

You will not lose the minutes if you add to them before they expire. If you do not they are gone. I have a friend who occasionally adds to my account both to keep it active when I'm not there and to have some minutes on it when I arrive. You only have to add a minimal amount.

After several months there is danger of losing your account which means a new phone number and registering the phone again.

I reread the terms & conditions where after 30 days you will lose all credit. but still have the number

Yes, when all else fails read the instructions :-)

UPDATE

My DIGI went inactive and I had to spend about an hour at their office this morning. My phone number was given away to someone else because there was a lapse of more than 30 days. The girl informed me that they do not recommend putting additional minutes on the phone if you are away. They said you or someone else needs to call the phone every month (no more than 30 days) and leave a message. That will keep the phone active. Putting money on it only benefited who ever got my number I guess.

I've had it go inactive before a few times but they were always able to reissue me the same number at no charge. Not this time. I hope I understand the process better now but I'm not 100% sure.

I take care of a SMART phone belonging to a friend who comes for a visit annually. As long as I make a call once every 90 days the phone number stays active. Sometimes the credit is expired when I make the call so I top it up, but have not noticed the credit expiring during that time. When she is away I only top it up $5 or $10 at a time and it seems to hold for the 90 days.

I have maintained two phones on Digicell for the past 6 years. Once a month I make a call to each number (I don't leave a message) and top up with $5BZ every 90 days that I'm not in Belize. This has always worked for me but, because of this thread, I checked both numbers today. I'm golden. See you all on Friday.