The site, called A Spokesman Said, launched earlier this month. It enables customers to log their complaints and companies can register with the website in order to resolve complaints directly.
Companies will receive a customer power score based on a formula that measures the speed and quality of its response. All companies start with a rating of 100 per cent, which will adjust according to their handling of customer complaints on the website.
MacKenzie said: "Customer service and PR managers are waking up to the opportunity our platform provides in retaining disgruntled customers and managing their reputations.
"We are on the side of the little guy but that doesn’t mean we are anti-business in any way. Losing a single customer can cost tens of thousands of pounds in terms of lifetime value, not to mention the reputational damage that follows. Registering with A Spokesman Said could help companies avert a PR and commercial disaster."