A very angry and unsatisfied customer

I am very angry and disgusted by their service. They billed me R22 000.00+ after my daughter's device was ****** regardless the fact that i had specifically asked for my bills to be capped to avoid the mess i find myself in. Regardless the fact that i did not authorize the transactions that went through since the device was ******. I made countless visits to their stores in an attempt to try and get help but to no avail. They don't even attempt to help. They insist that i am liable to pay even though some of the transactions went through after the simcard was suspended by them how i don't know. I am so helpless i need an intervention of someone who can really help here