***********, unhelpful staff

Telkom employs *********** people at their help desk. I have always had 5 contracts with them. My earliest contract taken out back when they were 8A is over 20 years old. It expired this month. I have had unlimited air time as I have always paid my bills on time. Suddenly, some nincom****, makes my limit R100. This is without my authorization. So I cannot make outgoing calls now. I called the help desk. They had the cheek to make it R300, but only from March! It is very frustrating because I'm going to be travelling around the country. And I need airtime because I can have a breakdown etc and need to be safe. Can someone competent please urgently contact me?