Welcome to our Community Forums! Thank you for your first post and I'm very sorry to hear that you've been having some issues with your mobile order!
I completely understand your frustration and I do apologise that your order has been cancelled without you knowing. In order to look into this further, we would advise you contact our mobile team directly on 0345 600 0789.
Our team will be able to assist with your mobile account query and set it up again in full. I do apologise that you've had some issues with this process so far, however our Mobile team will be able to assist further.
It may be the case that this happened due to the missed call back, however our Mobile team will be able to process this further for you.