Poor service and not honouring agreements

In July 2016 I signed a contract with said organisation with the undertaking that they would arrange for a Eskom tariff change which would result in at least a 25% electricity bill savings. Furthermore, as the contract was service based, there was a proviso that I could cancel the contract and be refunded the initial installation cost of their monitoring equipment in the amount of R8780. As no change was seen in the electricity bill after 6 months I requested the cancellation of the contract. However, after a meeting with the CEO of the organisation I agreed to a deadline of end July 2017, which was later extended to end August 2017, by which time the organisation undertook to ensure the tariff change and savings as originally committed to. As no change was made by end August 2017 I advised the organisation that I was cancelling the contract and requested the refund of the installation costs as agreed upon. To date no refund has been forthcoming and I find the organisations communication and response to my mails non existent.