Bad attitude towards clients, they don't know how to talk to people, Here is an example of a negative review about an English language school. Please specify in what tone you want — politely critical, sharply dissatisfied, or maybe with irony?
So far, this is an option, in a restrained and critical tone.:
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Unfortunately, I cannot recommend this school. The teaching leaves much to be desired — lessons are often unstructured, and feedback is minimal. The level of organization also let me down: there were postponements of classes, confusion with the schedule. It seems that the school is more interested in paying than in actually teaching students.
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Do you want me to adjust to a specific situation or add details?