Thanks to friends and family tweeting about my situation, TMobileUK are looking into it to see if they can help. I've been twittering (if that a word) with a person called Sorcha who is kindly looking into it for me. So hopefully will have my full access back soon so I can communicate properly using my laptop, rather than the phone.
If I don't get any joy from Sorcha, my next step is to email the CEO of Everything. Everywhere who owns TMobile. I've been given Olaf Swantee' email address along with his PA Sue. Hopefully though I won't have to do that and Sorcha can sort something out for me.
Thanks again to those who are helping in any way you can x