The most direct way to the business hall to unsubscribe, of course, the online business hall can also unsubscribe. Depending on the location, the details are different, and the local business hall can give a real answer. Here's how:
1: Call the customer service of the communication company, Unicom, mobile, telecom.
2: transfer to the manual service, 3: ask the number of the local business hall, call the business hall to ask the next to know.