They don't seem to have one. I had to take my Vodafone back for repair. They did not have any spare 'loan' phones so I was left with nothing. They said they would call me when my phone was ready to collect but they only had the number of the defective phone which I had left with them.
I called the website land line number many times but it was never answered, Just rang and rang until I got a message 'this number is unobtainable'. In the end I waited a week and went back to the Vodafone shop, luckily my phone was back waiting for me to collect.