Black Friday Special not Honoured

I was out of contract with ADT and contacted the Richards Bay Branch in response to a Black Friday deal where you were offered 4 months free when signing a contract. I spoke to ***le who needed to confirm details of the deal. I also asked if they would throw in a free battery (which they did in 2013) if I renewed the contract. She said that she would speak to the branch manager and get back to me. I received a call about 2 weeks later but she did not recall our initial conversation properly, so she probably just penned my name into a diary somewhere. So this time, she said that the battery could not be thrown in and that they could probably only install a gate entry system that allows patrol to enter your property. The monthly premium she quoted was also not discounted as low as I know ADT could discount (I had just assisted my mum in renewing her contract on Black Friday as well). ***le indicated that this was as low as ADT could go.

I contacted the ADT call centre on 13 December 2017 (Spoke to Davin), and they reduced my premium to the same price as my mum and they were tasked to find out about my free months due to the Black Friday promotion.

After no further feedback, I contacted the call centre on 4 January 2018 and Theodore confirmed that my premium had not been discounted and there were no notes about the 4 free months. He said that he would escalate to Michelle.

After no feedback, I contacted the call centre on 23 January 2018. Marentia confirmed that somebody had made a note on my profile to have the premium discounted, but yet again, no mention of the free months. I am tired of this now. I expected the call centre to be more efficient. Can somebody please honour the 4 month free deal and follow up with the free installation of the gate entry system that was promised? I'm tired of explaining to every different call centre agent what my issue is.