I noticed some several weeks ago when I examined my usage on Lebara that my SIM card had been sending text messages to a number 01534100121 regularly, sometimes several times a day in the daytime and early hours of the morning. I did not send these messages but obviously the subscriber of the number in question would know mine. I have taken this up with Lebara who assure me that changes have been made to my account to prevent this. However, nothing has changed and still the messages are being sent from my sim. I think there are obvious security implications and on further enquiry I understand that other Lebara customers have the same issue. I have now reluctantly left Lebara for another provider. I post this message so others who use their services are aware and can decide what, if anything they wish to do about it.