Need plumbers' advice

[hermetic]

I bought a new toilet 3 years ago from Lowes, had it delivered. Hired a local plumber to install it for me. When setting it he told me he had a better bottom seal for it and talked me into a trade for the one that came with it. Well, 3 years later now and that seal is leaking and I am not happy. Woman alone here so what should I do? Tell him when I call? Wait until he is here and then remind him that he insisted this was a better idea? If he charges me to replace it should I call him out on the internet as one who can't be trusted?

I'd kinda rather call a different plumber but believe this guy owes me. Seriously, 3 years? What's your thoughts on this? TIA!!