Well, the statement doesn’t make sense at all, but in fairness it would be visible why overdraft fees would be charged: in the right most column of each payment is the account balance at that time, so you could work it out from there.
However, the statement is a right mess:
- balance at the last transaction: £5 (first line, right column), but total balance: £20?
- even worse:
- starting balance (not explicitly shown on statement, but known to me): £0,
- “Total deposits”: £20,
- “Total outgoings”: £15,
- gives a “Total balance” of… who can do the math… £20!!!