I believe that this dream was about your question about prosperity. The world wants us to be part of and in bondage of the worldly system of finance. In the dream, you saw that they want to keep you in bondage. They “take” and they “keep” and they “do not want to give back”. The credit card symbolizes the way they do it: “CREDIT”
They want the church to loan from them so that they can owe us and keep us in bondage. They want us to buy everything through credit so that they can take a lot of interest and make them rich that way also. They do not want us to be free that is why this woman tried everything she could to keep you in bondage.
The wall and the electric fence is inside the area of God’s protection. His walls are strong and He has power (electric fence).