Cancelation of Flexi Club

Dear Flexi Club. (Member Number 051013) I'm writing this on behalf of my mother who is 79 years old. She wrote a letter in March 2021 to cancel the Subscription and to use the points one last time because of old age and affordability. She did got confirmation via e mail that they approved the cancelation. Last week she received a Invoice for the new payment for 2022 that will be detected on 1 October. Can you please look into your records that the cancelation was approved and also cancel the new invoice?