Acatha Sistema Contable interview questions

I had 3 interviews with them, the last one was a technical test in which they wanted me to solve two errors they had in production with their application with the excuse of being a 2-hour technical test and connected to a remote desktop and with administrator credentials. In conclusion, they wanted free work with the excuse of a technical test, and then they told me that there would be no hiring, a typical tactic. I did not do it clearly, I do not recommend her lack of sincerity and attention to the employee to be hired, her intentions were evident from the first interview.