Unauthorized debit order transactions

An authorized debit order transaction for a Credit card I don't have with Discovery . I have numerously sent banks statement to discovery for debiting my accounts for a product I don't have with them. It's time consuming calling them to reimburse the R3789 amount they took from my account on the 30th March 2018. When I follow up I'm tshepo the matter is with FNB. This is the 4th these debit order transactionsome have off my account first different card number. I don't understand why they don't update their client information with the correct account information When I speak to the agents they confirmed that the only product I. Using there is their medical aid. So I don't understand how my personal details is linked to all the credit cards transactions I'm being debited for . To date I have received a single call from discovery on how they are going to permanently resolve this issue. I've copied Tshepo Shika, Discovery Card mail box and ********** And nonew of the people came back with an update regarding their findings