I took out a two-year contract. After eight months they told me their monthly tariff would be increased which I thought would be a breach of the contract.. So I called them and asked to break my contract. They said I could not do that without penalty. So it seems they can break the contract but I cannot. Watch out at the beginning. They will give you a cheap deal to start with but check the data allowance which will be really low. After a couple of months they will tell you you are using too much data and they are going to charge you extra - a lot extra. You have been a sprat to catch a big fat mackerel. I think this goes under the heading of a con or a scam. Either way it's immoral. Don't use them.