I saw that you ask this question in another thread.

Did you take note of some of the answers?

I have an acquaintance whose site was hacked about a year ago (she was using some other eCommerce platform - Opencart I think) and the bank cancelled her card processing service and blacklisted her. She cannot process card payments now through her business, and has had to make an arrangement with another business to get them to process card payments. They charge a commission. Also, it means her online site cannot process cards. People have to place an order, then they phone the other company to pay. It's a mess. She has lost a lot of business.