HELP! My Iphone shows the contacts name when recieving a call, but now when i

[holden_nick57]

recieve a text message? I have only recently purchased it, i had it in Australia, i am just confused as to why when i have a number in my contacts (eg. 00000000) it shows the contacts name when i recieve a call from that number, but when i recieve a text, it has the area code then number (eg. +61 000000)

I would appreciate an answer ASAP.