Thank you for your new question.
You have to prove that you paid in full and if you agreed to give them more, an offer of settlement is not admissible under the FL rules of evidence to prove that you owed them more money. The 1941 case is still valid and it was cited with approval in McGehee v. Mata, 330 So.2d 248 (Fla. App. 3 Dist., 1976) as well.
Under FL law, you would not recover attorney's fees unless the court finds their case was frivolous and without legal merit, which is generally something difficult for you to prove unless you prove that they had no grounds at all for thinking you still owed the money you dispute is owed. If there was some mistake with the clerk of court or miscommunication leading them to believe they had a valid claim, then it is likely the court would not award you attorney's fees I am afraid and it is solely in the court's discretion in these cases.
In the end it is generally better to try to resolve and settle such a small debt (small in the eyes of the court, maybe not in your eyes as it still is a decent amount of money to most people) as it can save you much more in the long run.
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