How long can Jin Yanka, a rural credit cooperative in Henan Province, be cancelled by SMS?

Jin Yanka's SMS reminder can be cancelled at any time. If the landlord has a subscription year, 30 yuan will start charging on the day of next month after opening, and the fee will be deducted once. If you don't cancel it at maturity, the system will automatically renew it for one year. It is suggested that the landlord cancel at the counter before the expiration. Similarly, so is Bao Yue.