Unhappy [Q] Unlock Sim Card Help Please !!!!!

hello guys , i really need ur help as soon as possible

MySim card is locked after 15 days since i entered turkey because i didn't bought my phone from turkey ,, i have AVEA provider Network

so please i need a way to unlock my sim so i can make calls a gain

Thanks in advance

p.s : my phone is not rooted . and i appreciate if u can provide me with a way without rooting my phone !!