NO ANSWERS ON BILL FOR JUNE 2020

Ive been quering my June 2020 cellphone bill since mid June 2020. It is now 14 July 2020. There was a charge of over R1200 on the invoice. It didn't specify what is was for. Ive queried it about 5 times. A ticket is logged, then its closed a few days later with no reply and reason. I am getting absolutely nowhere. I get transferred from one person to another with no real answers. I'm told I was emailed the breakdown, but don't get anything. My bill has never been this high and all I'm asking for is proof what what is being charged for. Why is no one helping me??? I am drained by all the calls I've had to make. I'm on the call for up to 1 hours sometimes and still no answers. Please help, I am drained.