I moved to Hamilton in February and inherited the previous owner's water tank from Reliance.
I called to put my name on the account and they started sending me two bills. One addressed to me, and the second to "home owner" for the same heater. I called them several times to assure them that I have only one tank and to stop sending the second invoice. In the end, they stopped sending it. Months later I get a call from a collection agency looking for money owed to the imaginary account.
Then I decided in May to get rid of the inefficient energy hog and install my own tankless gas water heater. I had the unit removed and I returned it to the Reliance water tank return centre in Burlington. They gave me a receipt. That was in May.
Now in July I get a new bill for the tank I returned. I called their customer support and they have no record of the tank being returned.
I've heard stories of other people having the same problem - of them returning the tank and then continuing to receive bills and the return not being processed quickly.
I would never recommend this company to anyone. It is far cheaper in the long run to own your own water heater and frankly, they aren't worth the hassle to rent from.