I accepted and cashed a check from a painter as settlement for a seriously substandard job. I took the check because he refused to do what I thought was necessary to fix problem, instead wanting to do touch-ups. I won't go into all the gory details about the number of times I'd already called him back and his excuses, and how bad the paint job was (lots of pictures though). The gist of my concern is what he wrote on the memo line, which I overlooked in part. What I did catch was the 'Release from all claims...", which I was ok with - he did a very poor job, was extremely belligerent and combative, and refused to correct it, so I had no intent to try to recover an further cash/compensation/damages from him beyond the amount of the check. I simply moved on to another painter. However, I had every intention of posting reviews and pictures on contractor review sites to make others aware of his quality of work and did so. I was challenged almost immediately by a rep from the company claiming I violated terms of the settlement. The part of the memo line I overlooked, which was written in smaller print than the 'Release...' part of the memo and required some squinting on my part to make out even after it was pointed out, said "...known and unknown and reviews". My question: is that memo line legally binding in Arizona? Common sense would seem to indicate No, as I could have written anything in that memo area myself (ie, "partial refund for poor job, balance due in 30 days") before depositing it, but I'm not an attorney. Thank you in advance for your help.