Bolt takes a processing fee every time you pay by card

Every time I use bolt and pay with my card they charge me R3 Mastercard International Processing Fees. What a *******. Getting 50% discount on my ride but paying R3 more for each trip. What a ****. Pathetic customer service. Robbing customers who do not check their bank statements. This fee was not mentioned when you add your card details and now I've been charged over 60 times. 60 x R3 = R180 for bank charges. I bank with Capitec, another bank may charge more for the processing fee. Fix this problem before I write to the local newspaper reporting this *******.