TLC Plumbing is the worst company I have ever done...

TLC Plumbing is the worst company I have ever done business with. They replaced 2 toilets for me back in March 2017. One of the tanks has a crack and I called to see what they could do, and they said nothing because they only warranty the toilets for 1 year. I asked how much to replace the toilet and they said approximately $800, maybe more. How did the price jump $300 or more in a year? I will never do business with this company again. They suck.