Neither Sam nor Trike are actually in mood to deal with that old man.
It is not really in Sam's interest to deal with this old man. He might be a good enough to trigger to cause a mess if played well. However, he is nowhere near big enough to keep Sam's consistent interest. As for Trike, he knew that this man couldn't get out of the Duat region.
Not without Trike's explicit instructions. So, he will let the rat worry about its life for a while before dealing with it.
The next day, Sam just finished the last negotiation. This time, he didn't want to fight. After all, there is no purpose to it. But he has to fight to keep up the appearances. He finish the fight quickly and finished the contract.
He didn't even wait for long. He just left the Duat region as soon as the contract is signed.
When he came back to the Olympian region, that first thing he did is to go and meet Ling Tian to confirm when the ban would be lifted.