Crap Game

Last night, I was playing 'Civilization V Brave New world'. It's a single game, and I play it with the computer programs, there are 6 civiliazations in the map which contains 2 continents separated by ocean, each continent have 3 civilizations. There are also 10 city states distributed in the map randomly. My civilization is Chinese, the other five are random civilizations operated by the computer program. Initially, all players belong to 6 different teams, I changed the setting and put one computer civilization in my team, thinking that it would be easier to have someone assist you to play against the other 4 independent programs.  But it turned out that I was wrong. In the sceen, it just displayed that the state of your partner is 'friendly'. At some stage, I launched a war against another country, I was trying to deploy my armies to cut off the connection of two cities, so the city I attacked had no backup from the other one. When I thought I was gonna win the battle, suddenly I was made peace with the opponent without my command, it was my 'friend' country who did it! It was the computer program in my team that decided to make peace with the country I was fighting with when my side was dominant. It happened at the time when big ships hadn't been invented to cross the ocean to make any physical contact with the other 3 civilizations. My teammate was on the other continent! After that, it happened several times, there was no coordination or cooperation in the team, it didn't ask for my opinion, in fact, it didn't need my approval or consent to stop the war, my side was forced to make peace in the middle of war. What a crap, who designed the program?!