Standard Bank - blocking my purchases without reason or solution

My Standard Bank card repeatedly failed to do an online transaction with an well known vendor. (Steam) I phoned multiple departments at SB, trying to get the issue sorted.

Eventually, after talking to 3 departments and at least 5 different consultants, the last one informed me that SB got a directive from the Reserve Bank to block all transactions with this particular vendor, and that SB has no solution to offer me and that they did not make any effort to inform me of this before hand.

During this process the SB calls got dropped 3 times on me, the one digital authentication method stopped working that I was supposed to use during the calls and the complaints department had a technical issue preventing them from logging my complaint during the call. (Just mentioning additional issues experienced in the process)

I am very unsatisfied that SB took this long and so many calls from my end to get to the answer that it was in fact SB preventing me from doing an online purchase, and that there is no solution.

I tried to log multiple complaints with SB for all the different departments and consultants that could not give me answers, dropped my calls, told me that the issue is absolutely not with SB or my card etc. One reference number I got in writing back is: ***2