Gtech Computer Graphic Artist interview questions

Interview went fine enough, friendly, seemed interested in me etc. Wanted me to then come all the way down to their office in Worcester and stay in a hotel of their choosing for a few days to meet the team and learn more about the job, etc. Also said I would be 'given some work to complete', aka free labour from someone who isn't even an employee yet (or any guarantee of a job offer) Naturally I asked if I would be compensated for this, they of course said no, and immediately cancelled my trial day. Guess they don't like being called out on their bs to get free labour. Disgusting practice, clearly praying on young people who don't know their own self-value. Avoid at all costs.