INSTANT MONEY NOT WORKING ON CELL PHONE

Since Wednesday 26th September I have been unable to send Instant Money from my cell phone - initially I could also not send from my Computer as well - this is a service I have been using for a long time - with great satisfaction....no longer - countless call to call centres by my self and my local branch - Montagu and this is still not working - I log in and receive a message stating "I have a possible security issue with my profile" I have been given several reasons and reference numbers : ********** 1 and ********** and have been told at least 3 times that the issue has now been resolved. I have been put through to the ***** division and instant money division - receiving no success. My branch is also at a loss after checking my profile and making calls. Note it is working on my computer now - but I use the facility on my mobile far more often. Please - solve this once and for all!