It was my house electric bill of 15k which I was paying via. PayZapp app, which they declined stating commercial usage.
I did many calls to customer care, they said they are helpless, they have block it sighting commercial usage.
It was just 1 week old BizBlack card.
I told them F word and closed the card permanently.
If they can just decline the transaction as per their wimp then it's the card I cannot depend on.
Boss, If I cannot pay by electricity bills then any card let it be, it's of no use to me.
Even my Amazon Pay card let me pay my 30k to 40k electricity bill.
I do have other super premium card, I am happy with them.