Just some Regular questions about availability etc, why I want to work at Tesco, if I was available on weekends very informal, was only a short interview and was offered the job on the spot

Cancelled interview last minute and rearranged it for a day I was not available despite already booking a day off work for the first interview. Extremely inconvenient. When I eventually attended the interview they told me sometimes during a shift you will need to complete your delivery route past your shift end time. I found this unacceptable as it basically means working unpaid overtime. No incentive offered. Received a job offer but declined.