[Life] customer care

I have an example of an ugly customer care service.
I'm trying to buy some books from bol.it . I don't know the exact reason but bol.it cannot withdrew money from my bank. I asked for some explainations and the answer was (in italian):

1. they store my credit card number
   
2. i cannot modify my credit card number
3. i need to make another order in order to modify my credit card number
4. i need to call them at a payment phone number ...
5. ...to comunicate by voice another credit card number

i think that if you really want my money you need to cherish me.