What is the meaning of "adjustment, increase or decrease" in the charging items of China Unicom?

Adding or subtracting items is one of the ways to display bills in Unicom's online business hall. If the increase or decrease of the phone bill this month is positive, it is the fee to be paid; If it is negative, it will be offset directly by participating in the free or gift business.

The telemarketer of China Unicom called and asked if it was necessary to handle broadband packages and other services. Actually, there is a minimum consumption. For example, broadband is delivered as long as it is in 49 yuan. Current package 19 yuan. If you apply for free broadband service, you need to pay 30 yuan's "additional items" every month.

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Unicom has regulations that after the broadband expires every year, if consumers don't take the initiative to apply for downtime or change their packages, they will automatically be converted into monthly packages.

"After the annual fee expires, it will be directly converted into a monthly subscription, so that broadband services will not be interrupted. If the customer prepays the broadband fee, the monthly fee will be deducted from the broadband fee; If there is no deposit, it will be deducted from the bound fixed line or mobile phone. As long as the fixed line or mobile phone is not in arrears, it will not stop. If there is no pre-stored broadband fee or no bound mobile phone, stop directly. " Unicom's customer service also said, "At present, there are no services such as SMS notification, and consumers need to go to the counter of the business hall to inquire."

People's Daily Online-"Invisible Package" exposes the management loopholes of Unicom, and users are inexplicably deducted from broadband fees.