I'm surprised that I got free phones from my cell phone job they never charged me for.
Do you think you deserve them?
Yes, I had a lot of patience
Even if you worked really hard and were really patient with people, if you didn't pay for them you should return them. If your work place finds out, they could fire you.
Who cares.
I believe that honesty can bring you miles. How about taking a chance and telling that you weren't charged, they might like the honesty and let you have it for free anyways!