Disgusting and unprofessional

I booked flights online yesterday and used my credit card for payment. Everything was fine until I clicked on the pay button, 2 separate amounts were deducted from my account. 1 was for the ticket payment and the other for ''Insurance''. The insurance fee was never part of the total amount displayed to be paid. I called the call center and I was directed to the insurance who then referred me back to Mango Airlines. I spoke to a lady called Momo on refunds and she was not interested in helping me. She first transferred my call to an insurance called AIG who told me they don't work with Mango airlines anymore and transferred me back to her. She then told me I should send an email. I find it disgusting that a big airline like Mango can ******* customers under pretense of useless travel insurance. Worse, I had to make an amendment to my return flight and upon paying for the change booking fees they again deducted another R200 for insurance. ***!!