A Nightmare To Cancel Movistar Subscription

I am a Movistar Plus+ customer in Spain and I have been trying to cancel my subscription for some time, but I have not been able to complete the process. Through the Movistar Plus+ virtual assistant, I requested information about the end date of my paid subscription and then tried to start the cancellation. The bot indicated that the cancellation was in progress, but in practice the process is stuck: the assistant is frozen, my cancellation request does not go through, and I cannot even see the last day of my paid period in my account area. I have also tried to resolve this problem via chat, but the virtual assistant does not understand my request and I have not been able to reach a human representative who can complete the cancellation or at least clearly inform me of my subscription end date. I request that my Movistar Plus+ subscription be cancelled without any further delay and that I be informed in writing of the effective end date of the service. I also ask that no additional charges be applied after the date on which I first attempted to cancel and that any amounts that may have been charged beyond that date be refunded.