Ridiculous billing

June I was unable to pay my account due to unforseen circumstances. My account got suspended and I paid an amount of R1500 which I assume is for both June and July.

When I check my bank statement it says I owe 2155.40 for this coming month cause I haven't paid for the last tthree months! How is that even freaken possible when an amount of 1500 was debited from My account during July! Worse the call centre agents have the worst attitude and can't assist their clients at all! I'm tired of this network provider and it's poor service.