Unauthorized €88.99 Charge for Opodo Prime Membership, I Never Subscribed

Opodo has charged me €88.99 for an Opodo Prime annual membership, but I never requested this. I don’t understand how this happened, as I never signed up for their membership program. The charge is still in the pending status, but I want it canceled immediately. From what I’ve seen in other complaints, Opodo Prime's team seems unreliable and incapable of resolving these kinds of issues without external help. I’m reaching out to inform you about this unauthorized charge and to demand that it be refunded immediately. I have no interest in this membership and expect quick action from Opodo to resolve this.