Unauthorized debit orders

Good morning

I keep having a problem of people I don’t know debiting my account. More than twice a month I have to deal with debit orders I don’t know. What is the bank doing to protect it’s customers from such nonsense?? This is costing me money. Because as much as it’s not my fault I have to pay for bank charges reversing these debits. This also doesn’t look good for my credit. How are these people even getting my details to begin with. Find a way to protect your customers!!!