I've been having an issue with a multinational company recently. I had been passed from Billy to Jack and back to Billy again over the last 2 weeks. People promising to call me back and no joy. Nearing my wits end, I spoke to a colleague yesterday and they asked if I had a Twitter account. Well, I made my first foray into social media yesterday and opened a Twitter account. I tweeted to both the Irish and UK Twitter accounts describing my issues. Within 20 seconds I had a response from the UK office. A few minutes later they contacted me again with an internal customer reference number for my case and 2 hours later I received communication that someone will be travelling down from Dublin tomorrow (today) to address my issue. It seems for larger companies at least, Twitter can really cut through the mustard!