Hi PatiMegi,
Thank you for reaching out to us in our community and a very warm welcome both here and to Virgin Media, We are sorry to hear you haven't received your amazon voucher.
I have had a look into your account and can see the services were installed a little later, any vouchers ETC are sent via a 3rd party and are generally sent around 90 days after the installation date, if you still haven't had them after this time please let us know and we can chase it up for you?
Regards
Paul.