Just waited over half an hour at the checkout in Tesco's. There was only one open with nine trollies in front of me. I do not think this is acceptable. Last time I was there, I waited 20 minutes. I spoke to a supervisor this evening who said customers are complaining every day but no-one is listening. I will not be shopping there again until their customer service improves and they start treating us with respect. Has anyone any ideas for an alternative supermarket with shorter queues and a better attitude towards its customers.