Termination of contract

Just impossible to terminate a contract since 12 August 2021. The required termination fee was paid on the 13th of August 2021. Numerous e - mails was send. Customer service and retentions responded by e-mails on e-mails send, but every month money is still deducted by debit order for MTN - last deduction 28 December 2021. Siebel Ticket ***.