Still waiting from 6th of May

i wrote a report describing in detail what happened, and how i was billed twice for a call out fee that the telkom technician is trying blame on me. i was told on the 6th of may that someone will be in contact with me, i am still waiiting and i refuse to pay that ungodly amount for a call out fee, well two call out fees, that was the fault of a telkom product. now my bill is showing in arrears for 2months. and still no contact.