Waited till the end of contract, and now being told I cannot move to a SIM only deal, but must take a new phone upgrade.
Only option I have is to move to another mobile operator.
Went on live chat and they confirmed that only option is to upgrade phone at inflated prices, and supposedly I could have moved to a SIM only 21 days before contract end date.
This seems ridiculous as I now must leave to get a SIM only deal, and I'd lose a customer !!!