Bad service&remedial action not fulfilled/honoured

As a new client, I submitted my interest in the Security system and Services on 12 December 2014. The assessment person did honour our appointment on the 20th. I then met with Thabo during their door to door marketing drive this month and entered into a contract with Thabo with Siya on the 15th of January. Bushy (technician) arrived on the 20th, installed the incomplete equipment and gave me incorrect remotes. I highlighted the issue to this Bushy and he said that he only works with what has been provided with from the office and I should lay a complaint with my Sales Rep. I contacted Thabo and Siya and was assured that the installation will be completed by end of the week (23 Jan). Yesterday I called the Pretoria Offices to get an indication as to how far they are as Thabo and Siya were no longer answering my calls, the installation is incomplete and I have the incorrect remotes. I was told someone will call me to setup an appointment to complete and give me the correct remote. Till now I am still waiting. I just want to know that will I be paying for an incomplete job and will I be denied the use of equipment I purchased and be forced to use the cheaper version?