If you hire someone to do labor in your house and they do a terrible job, do you pay them the agreed upon price?

My example happens to be with someone who said they had 25 years of experience, which led me to assume that they would do a good job. They grouted our brick pavers, and the section that I grouted looks 1000 times better than what the “professionals” did, and it was my first time grouting anything!

I paid them the full amount, just wondering what others would have done and what I would’ve had the right to do.