Incredible Connection Vaal Mall accounts department unwilling to accommodate client requests

The accounts department is dismal, work in a box and cannot accommodate a basic request, if it's slightly different to their normal way of working. A few weeks back I bought a computer for R22 000 from Incredible Connection Vaal Mall, and asked for a split invoice because two companies will be paying for it. They simply could not do this, or even tried to find out whether they could, It was a NO, and were quite prepared to lose me as a client. I also bought an entry level laptop for my business, when I asked for the invoice to be made out in my company name they could not because my mobile number when entered, brought up my personal info. Again they could not and would not budge. At my accountants request, I emailed the original invoice yesterday, asking for an amended invoice in my company name, they haven't even bothered answering me.