I went to China Telecom's business hall to cancel the number, and I owe more than 5 yuan. Why did they charge me 1 yuan? The business written on the list is pre-disassembling machine.

mobile phone sales numbers usually have pre-sales numbers, that is, the pre-disassembly machine you mentioned. To handle this business, you need to ensure that you are not in arrears. After you pay the phone bill and cancel the phone number after the disassembly period, you can return the remaining phone bill balance to the business hall.

usually, the downtime is to avoid other arrears, such as adding customized services, such as SMS service and QQ binding service fees. For details, please consult the local telecom customer service.