You could use voipbuster or a comparable service to get free calls. Getting up early is the worst part! Works great for me! I am not associated with them, I just use them to call around the globe for free. (I own a hardware internet phone, but in a pinch I have used my laptop as a phone too.
Skype. 2.4ยข / minute to the UK, incl VAT. Get a headset/microphone for your laptop and Bob's yer uncle.
