Got paid- didnt complete job

They quoted an amount to finish a job within 5 days. They said they had problems with their machinery and therefore the job took longer. After 12 days, and asking for more money twice, silly me felt sorry for them and helped out, effectively paying the full amount before they had finished the job. As soon as they received the money they did not show up on site again, and left their job half done. Now they dont take calls. <br>