Calling abroad on pay monthly

[Anonymous]

Hi, recently I signed a 24 month contract with O2 for Samsung Galaxy S5 for around £36/month. I'm quite happy with the tarfiff, but as I often make international calls, my latest bill is more than £80. Well, I can't say I wasn't expecting it, but I'd like to avoid situations like these in the future. 

Is there any bundle or tariff I can use to make cheaper international calls (EU Zone mainly)?

I'd be glad if anyone could help me with this "issue". And sorry for posting this question here, but chat is currently unavailable.

[jonsie]

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@Anonymous wrote:

This World Chat seems interesting. Probably will try it out this week. And correct me if I'm wrong, but it says that this app is available to everyone, not only O2 customers so it's not connected in any way with my existing line and I have to top it up seperately so I have full control over my spendings.

It almost looks too good to be true... or maybe services like this one are the reason why I'm with O2 for 4 years now.

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It's exactly as stated and I use it daily....