Disappointing experience with VOC information & overconfident manual colour mixing

I had the most horrible experience at Paintsmiths on Friday at 9h00. I brought a paint sample plus the paint name and asked for this to be matched and got an incredibly poorly matched sample. I can send a photo - not just a shade but a whole different colour alltogether. When I disputed the match I was gaslit by the technician. Also, I went to Midas Paintsmiths because of their minimal VOC commitment, but they provided me with Plascon paint without even enquiring about the swop and when I asked about the VOC (I am asthmatic and the paint was for a child room), they said the paints were all the same and all low. When I cited recent research on above-regulatory-levels of lead in SA paint, he assured me that water-based paint had no lead. I had previously had decent experiences at Midas Paintsmiths Stellenbosch (and especially at Somerset West earlier). However, I have also found the staff clueless wrt VOC content of their paints despite this being big part of their market differentiation. Do better, Midas!