Expensive phone

Time: early in the morning, waiting for office to open. Location: public phone booth. Situation: calling a mobile number in London. Insert coin 20p goes in. Press button to push coin in. Credit: 20p 10p goes in. Press button again. Credit 30p Call mobile number... 07xxxxxxx "Hi Malu, this is Shobana." Credit remaining: 20p "We..." Credit remaining: 19p "...just..." Credit remaining: 18p "...got..." Credit remaining: 17p "...here..." Credit remaining: 16p "...last..." Credit remaining: 15p "...night..." Credit remaining: 14p "...and..." Credit remaining: 13p "...are..." Credit remaining: 12p "...staying..." Credit remaining: 11p "...at..." Credit remaining: 10p "...a..." Credit remaining: 9p "...hotel." Credit remaining: 8p "OK..." Credit remaining: 7p "...I..." Credit remaining: 6p "...will..." Credit remaining: 5p "...call..." Credit remaining: 4p "...you..." Credit remaining: 3p "...back..." Credit remaining: 2p "...later..." Credit remaining: 1p "...bye." Credit remaining: 0p