S-Class inspection

Hello, now that the big one has remained in Bavaria, because the air suspension or the compressor has given up the spirit, the Service B (large inspection) was also taken care of. Yesterday he was brought back to us and I am not happy The first thing that was noticed is that the stupid tailgate opens properly. NEVER goes up completely but either it opens the flap only little or only half as far as it could. So far nobody has come to this in the 6 inspections. But what I don’t understand is that the car has now come to Service B at 196,550 Km … in the menu he points out that he wants a service B again in 14,000Km…is that normal ?? A 2nd point is that they have filled in in in the workshop 8 liters of oil (is only the 320 petrol) and now when I control the oil level over Ki he tells me “oil level too high. Please release oil!” Can it be because of the high temperatures (currently still 25 degrees) and goods is in the shade. What do you mean ? Mfg Freddykl