SHOCKING - NOT KEEPING CREDIT CARD DETAILS SAFE!!!

How is it possible that when a client wants to update his credit card details via the website, that there is no such function. When I called your support centre I was advised by a lady that she can change it but I should read my details to her or I should email her directly. How the fu ck can you have this unsafe approach, anyone could record the call or make notes of my details, not even to mention how dangerous it is to email credit card details around. How can you not have the ability for clients to change their billing details online???? I am not going to fight with you to get you to take my money from the correct card, I am going to cancel my products and move to someone who follows safer practises. Disgusted in this. What's worse is when I told the agent I am not comfortable giving it over the phone or via email, she was incredibly rude and unhelpful and got a major attitude. Would you give your credit card details over the phone or email it to someone? So fking retarded. Stay away from Vox.