Large unexplained deficit in price paid and actual share price - Refusal to respond as to why

Recently I contacted Easy Equities on their support email: *** in order to ask them why there was such a large deficit in the actual share-price at the time of purchase and the price that I actually paid for the shares bought using their platform. This deficit does not include fees paid, which are charged separately in addition to the price paid for the actual shares. I have received no reply from them after a week, leaving me awfully suspicious that they have no valid answer for me. It cannot be anything to do with very low share-liquidity as the shares that I bought at the time were for Shoprite inc. A quick look at google will show you that these shares are traded approximately every 30 seconds.

In the email sent, I asked them:

"Please explain the reason for the difference in price paid (R 161,50 - almost off the chart), and the actual share price (R153,97) at the time (of purchase)"

Along with some screenshots attached for evidence. No answer....