People who have worked or currently working with Mammon

Hi guys. I was wondering what your experiences with Mammon have been. I have noticed since the day I started working with him that when I use a ritual written from someone else he is a no show. When I use my own words he comes and he delivers big! The last two years because of him I have won more than 20000€ ( online gambling) I tried to make a pact with him and my friend who reads Tarot told me that he is afraid to come into a pact with me because he thinks he won’t be able to deliver. What do you think?