I buy EE 6 GB SIM cards from Amazon which are data only. Since late last week I have been getting numerous Twitter texts to 86444, from people who I don't know. I changed over to a new SIM card, and therefore new number, and still got the texts. How do I stop them? I can't text STOP, because the SIMs are data only. And why am I getting them anyway? I have never registered to receive Twitter messages by text.