Changed job and asked if I could change my direct debit date, like you can do with any other company. Was told I can't do it and would have to pay through the app. Get bombarded with reminders every month to the point of harassment. I put my usage cap at £5, received a hassling call saying I was due them £59 today. When I said I had capped my limit the guy basically made me out to be lying. In disgust I went out and got a three payg sim, even though I still have a year to run on my contract as I don't trust these cowboys not to over charge me again. Customer service is by far the worst I have experienced in 20 plus years owning a mobile. Rude, patronising and pathetic. Steer well clear of this rip off company. Can't wait till my contract is finished with them. Good riddance.