We live in a complex of flats where children are not allowed to live. A neighbour (not sure which) has regular visitors who bring children. One of the children is a toddler and rings our entry system bell as it is the lowest on the pad. They allow him to do this and simply say “sorry it’s a child”, they don’t discourage his behaviour. They also allow the children to play around the meticulously maintained and non-child-friendly landscaped gardens. This is a “naice” area, and we pay a premium to live in a child-free complex. AIBU to complain?