[Resolved]  Idea Cellular — security breach

I did not pay my idea bill for last 3 months. Instead of sending me any notice or any mail, idea people started calling all the numbers that were saved in the sim contacts. They contacted almost 10-15 people form my list which accounts for security breach. Not even a single notice regarding the bill was sent to me, instead they tried to threaten me by doing so. Later, when i called idea customer care, they did not even took it as a priority subject. These people have access to all the data in our mobile, contacts, confidential messages, any account or password detail ever shared using the sim card, but they are not allowed to use it for any purpose as per laws.