faulty softwear on a LG G3 beat

Hi I have taken out a contract an when I took it out and since then I have sent my LG G3 beat for three times for softwear and now the second time to advanced repair for the same problem of the phone freezing and makes apps close down . the first time was on the 20/03/2015, second time was in the 20/03/2015 and on the 18/09/2015 and on the 23/09/2015 and now in the 2/10/2015 I have spoken to the manager the job care number is ***4 .