Charged For Services Not Rendered

Ordered 4mbps ADSL + uncapped ADSL package on 28 July. Didn't install ADSL line until 4 Sep bt they charged me for uncapped ADSL pack from 28 Jul - 8 Aug R97.11 excl pro rata & from 09 Aug - 08 Sep R250.88 excl. for a service that wasn't available to me. Charged pro rata again from 4-8 Sep(already charged!). Logged dispute about this at Woodlands Telkom Sunday mid August (no ref was given) . Followed up again 2 weeks later phoning Telkom call centre Ref ***4. They passed a credit of R186.14 (not sure where they got this amount from). Today got SMS from Salo Chetty ***,threatening to suspend services if I don't pay R1653.00 for pro-rata services from the 4th Sep - 8th Sep plus services from the 9th sep - 8th October. If I don't pay this by the 17th Sep, they will suspend my services. Tried calling Salo, no answer. Spent nearly an hour with billings & they still don't get that they're charging me for services not rendered for that period. New *** 7240. I'd like to speak to a senior person to escalate this before I lodge a complaint with ICASA. This is ********* behaviour and then Telkom threatens to cut my services because their employees are ***********.