Tekom charged me 2 months ADSL rental that was never installed/activated

I app**** for Telkom Home Uncapped (10Mbps)Adsl in August 2018.We where never contacted regarding the installation and activation.I received a statement end of October for R1700(two months adsl).We contacted Telkom and logged a dispute because we were still waiting for installation and couldn't use the ADSL because was not yet installed. We eventually received a TV Box via a courier but still no router.After wasting time phoning(no answer),I went to a Telkom shop and complained but had no luck getting a router.A courier delivered a router a week later(2 October 2018).We hooked it up but couldn't use the internet because the ADSL was not activated by Telkom.Telkom send a technician out after two weeks to come and double check the faulty line.The adsl is working well now but they deducted R1700 off my bank account.How can they charge me for a service that I couldn't use?I want my money back.It's impossible to get hold of any person at Telkom