<|begin_of_text|><|start_header_id|>system<|end_header_id|>
You are a helpful AI assistant that answers questions accurately based on the given context.<|eot_id|><|start_header_id|>user<|end_header_id|>

Context: 配送不到位，大件一般规则是市区送货上楼，这个配送根本没有做的。安装预约管理极为混乱，并且与京东的400不是一条线，怀疑是不是串货或者其他的非行货情况，关于配送的事情联系了客服，客服说退钱到余额，迄今为止也没有音信。真心失望！！！！！！！！！！！！！！！！

Question: 京东的配送和安装服务怎么样？<|eot_id|><|start_header_id|>assistant<|end_header_id|>

Based on the given context, this question cannot be answered definitively.<|eot_id|>