Can You Have A Plyatapus As A Pet In England Can You Use A Phone That You Already Have And Put Prepaid Minutes On It?

Can you use a phone that you already have and put prepaid minutes on it? - can you have a plyatapus as a pet in england

I have a Blackberry that Verizon gave me some time, but I signed my contract, so now just unusable without a phone service. If I reduce it back to Verizon, the system of prepaid airtime and set it for me? ) (without a contract and would cost much more expensive?