If you see a transaction for £1.58 labelled iTunes or iTunesComBill, this is known as a pre-authorisation and will be refunded to you usually within a week.
£1.58 - iTunesComBill
What is this £1.58 charge for?
An iTunes pre-authorisation is a check that Apple makes on a debit card to ensure that the card is working, valid and not reported lost or stolen.
Usually they only do one transaction for £1.58 to check the card, however they may do several if you make a lot of purchases.
How long until I get refunded?
It takes around a week for the £1.58 to disappear, if it’s been longer please email us at firstname.lastname@example.org.
More details on this are available on Apple’s website.