Account limited

A limited was implemented on one of my accounts a number of months ago. After monitoring the numbers usuage it became apparent that the limit was not activated. <br> Contacted customer care during the past week. The limit was reflecting however the technical reason for it not kicking in could not be answered. <br> Customer care promised I would be contacted via email with an explanation within 24-48 hours. Still no response received. <br> Kindly could customer care notify me of the explanation and how reimbur*****t of the over limit billing will be rectified. <br> Kindly provided the feedback via email. <br>