Help with past tax returns

I've been working for the past 5 years and have never claimed back tax. I have all my IRP5 certificates since I started working. I have no travel allowance, I usually pay for everything with my own finances. I'm registered for tax with SARS, but I'm not sure if I'm registered on SARS eFiling.

Kindly call SARS and ask them to check which tax returns you're required to submit then Register for TaxTim and SARS eFiling (How to register for SARS eFiling) and start completing your tax returns on our system.
You're unfortunately not able to claim a tax deduction for travel expenses you incurred as you don't receive a travel allowance