no response very poor service

i took my phone to dion wired in june this year to change my screen, i was assisted by a female and i issued all the necessary documents and was told that they don't have a screen in stock and will contact me as soon as they receive the screen. i went back there in september and advised them that i am still waiting to be contacted , the guy told me that the person that assisted me left work and they are not sure where she left the documents and that they will contact me, another 2 months has passed and im still not contacted. this is pathetic service.