30-12-2014 07:15 AM
30-12-2014 10:29 AM
Did these cards ever work before on 48?
On any other online site?
Do you have 3D-Secure/Verified by VISA enabled on them?
If necessary you may need to contact 48 support about this:
In the meantime you could try topping up by voucher:
How do I top up? Overview of the top-up payment op...
Hope this helps.