C5000 haier mobile
Not giving me replace lette

When i purchased haier mobile in july.then after 7 days i faced prob. in my mob. so i went to service center . there he told me sir you have to leave the mob. min. 15 days so i left that but my prob. was not finish next time he told me if ur prob. is not finish then i give u replacement letter now i has gave 4 time but he not give me repl. lette