wrong username all the time .

i paid order for 120 credit to frp unlock …and when i try to use it …wrong username although i m sure my username is correct …i say maybe my order have problem …in site is pending ….i paid another order and the same …no one in online chat or customer service ..send a lot of email and offline message
i try every thing …now my customer will take his device and i will lost 31$ without use my credits …. thank you for your help .