LG G1 65 OLED TV correct bracket not used on fitment

Last year I bought an LG G1 from Hirsch Hillcrest.Lg sent reps to deliver the tv and to fit the TV correctly to my wall.I had a wall bracket already on my wall which they decided would be ok to use.After fitting the TV,the TV was leaning forward on top at a bad angle.The rep tried pushing it back top straighten it but it did not fix the problem.They said sit low and it would be fine.They left.I have not complained till now because decided to live with it.But it looks like it is going to fall off the wall.So I phoned Hirsch and they got LG to contact me.They asked why am I only complaining now and that there would be a R850 call out. This was a very disappointing experience overall because they want to charge for a job not done right,and on top of that I bought this tv after being told if I register online I would get a 5 year guarantee.Apparently South Africa does not offer that which I was told after purchase.Nothing I can do about the guarantee,but the fact that they cannot come and properly fit without cost,or at least a much lesser cost,is disappointing.I expected more from LG.