Hey guys first time posting on this board as it seemed like the right place

Basically my mom wants to do up her back garden by digging some of it up and putting bricks and gravel down, my granddad thought instead of getting rid of the topsoil we dug up we could use it to even out the garden as there were some sunken spots, so we move all the topsoil and get the job done and feel pretty happy with ourselves only to have my mom's faggot (is genuinely a whiny homosexual) son who hasn't lifted a finger since we started come down and start giving out about the fact there are parts of the garden a foot higher than the neighbors and I can't see the problem as the wall is concrete and goes pretty deep into the ground too

TL;DR raised the ground a foot higher than my neighbors and can't see the problem, faggot has gotten it into my moms head that it could destroy the neighbors garden because of the ground water? also want to educate smol brain before undoing my work