faulty guns

bought a 1911 kuzey from them at the end of december took it out when i went on vacation mid december, this gun was faulty was the slide not going back after firing ive tried several types of ammunation, the next day about the 20th of december and after numerous attempts at contacting them on all possible platforms: they simply ignored all communication to this very day, i will never buy from these **** again thats for sure