Marcus - disgusting behaviour

I am genuinely disgusted and extremely disappointed by the way I was treated by Marcus at 4POS. Marcus personally discussed 4POS Evo with me before I purchased my approximately R1,800 4POS licence from Makro. At no point did he explain that moving to Evo would require that licence to be disabled. I had no issue paying the additional Evo subscription. My simple question was why I had spent R1,800 on a licence that would effectively become worthless when moving to the system he had already discussed with me. His response was that “nowhere on the box does it say 4POS Evo.” Yet nowhere does it warn that moving to Evo will disable your existing licence either. Rather than simply explaining this, Marcus became demeaning and dismissive, referred to being 65 and his years in business, told me to “go away”, and compared me to his ex while saying he didn't have to “give a ****” about what I was saying. I now also appear to have been blocked. I cannot accept being spoken to like this simply for questioning something I paid for. I had every intention of moving to Evo and continuing as a paying customer. After this treatment, I will no longer use 4POS or Evo. They have lost my business entirely because of how a legitimate customer query was handled.