Used Jobseeker Promotion, Canceled The Subscription But Keep Charging

I created a Jobseeker subscription only to benefit from the 1€ promotion and cancelled my account a few days later, as I did not intend to continue with a paid subscription. Despite this, over the last three months my card has been charged 19,99€ per month, for a total of 59,97€, without my knowledge or consent. I only noticed these unauthorized renewals today when I checked my bank statement and saw three separate payments to Jobseeker. Since I had cancelled shortly after the promotional subscription, I consider these charges unjustified and unauthorized. I have already contacted Jobseeker customer service about this situation but so far I have not received any response. I request that these charges be reviewed and that I receive a full refund of the 59,97€ and that any active subscription linked to my account or card be cancelled immediately so that no further charges are made.