You don’t have a refund or tax due. does this mean i dont have to file

[dmertz]

No, your requirement to file is not based on the amount of refund or balance due.  (Of course if you have a balance due, the implication is that you must file, otherwise you would not have a balance due.)

https://www.irs.gov/help/ita/do-i-need-to-file-a-tax-return

[gsoldrunner]

I owed nothing, I heard nothing from IRS but the IRS system says I did not file, when in fact I did.

[JohnB5677]

I'm not sure what happened, but I suggest you contact your local IRS office.  

To find a Local Office:     Local IRS Offices

Please be sure to have a copy of your return available.