Charges for being in Albania when I was in Greece

[AJF1]

I have been charged data charges for being in Albania when I was in Greece. I only discovered this when I left. 

Can customer service please correct this as I was never in Albania and am being charged nearly £50?

[MI5 · Accepted solution]

@AJF1 

Your phone would have connected to an Albanian network and is known as accidental roaming.

Speak to O2 and they may be able to help.

You can reach the Payment Management team on 0800 902 0217.
The opening times are:
Monday to Friday – 8am to 8pm
Saturday – 8am to 6pm
Sunday – 9am to 6pm

[Enlli]

Parts of Greece border Albania which often has a stronger signal in some locations. If network selection is set to Automatic it may well choose that network.

The way to stop this is to manually select a Greek network and leave the phone of automatic

[MI5]

@AJF1 

O2 advice here 

How to prevent accidental roaming

Accidental roaming happens when you're in an area close to a national border and your phone picks up the network across the border. If this happens, you may be charged as though you were roaming in the country across the border. You can prevent this by choosing manual, rather than automatic, network selection on your phone and then manually choosing the O2 network. This way if you lose the O2 network, your phone won't try to connect you to a different one. For help with turning off data roaming, go to our interactive device guide.

Using Your Phone Abroad | Help & Support | O2