Disconnection of postpaid plan without notice - Consumer Complaint for Globe Telecom

I was waiting for my billing statement for the month of September 2020. I followed-up with Globe Telecoms (thru FB messenger chat) and they informed me that my postpaid plain is terminated/disconnected. How can they terminate a plan without a customer's consent? I have no outstanding balance and I always pay on time. The Globe customer service did not give me an explanation. They are not even helpful. It is also difficult to get thru their number because it automatically disconnects. I am attaching my last billing statement for your reference and the message sent by Globe.