If it goes to a one-month rolling contract, check your bill carefully. Three now seem to have a policy of switching from arrears billing for longer-term contracts to advanced billing for one-month rolling contracts, while not admitting that to anyone. When this happened to me, I was billed for both an arrears AND advance period (i.e. for two months) in the first month, i.e. I suddenly got a bill for two months. The only response anyone at Three could come up with upon being challenged was (a) obfuscation and misunderstanding as much as possible; and (b) trying to sell me a new long-term contract which would make the problem go away. My suspicion is that this is a deliberate policy now and a very disreputable practice.
