So what happens when you've had enough and want out? Your internet company is supposed to give you what's known as a MAC code. It's supposed to help you to switch seamlessly to a new supplier. But a number of providers seem unwilling to give them out and let you leave. The industry regulator Ofcom has received so many complaints about this it's now made it compulsory for broadband companies to hand over your MAC code within five days of you asking for it, regardless of any ongoing payment disputes. Companies found in breach of new MAC rules can now be fined up to ten per cent of their turnover.























