Generally, if the arrears exceed three months, they will be automatically cancelled in about six months. After staying in the company for a period of time, the company will recover them and put them on the market again for sale.
If you owe too much, the current mobile phone cards are all registered in real name, which may affect your credit information system, that is, it may be blacklisted, so if the mobile phone cards are not used, it is best to cancel them in time.