You think? With the best will in the world what do you want a Goetic to do? Rearrange time and space like Tetris just for you? You can’t stipulate “I want her within two weeks” - do you realise how powerful these entities are? Time means nothing to them.
You aren’t project managing them.
He is giving you assistance commensurate with your respect for him. As @dollarvaluemenu advised you need to establish a relationship - Duke Sallos is your very rich patron who can invest his time, effort and resources in what you want. You are the one buying him whiskey and cigars to keep him on your side and assisting you but only once you have a relationship. No one likes a brown nose.