Diluted 100% juice

On the 21 December I went o McDonald's for an afternoon lunch with my boyfriend we ordered big Mac meals with orange juice minute made take away. The food was ok but the juice was diluted it was just water and it tasted bad worst of all it was served by the manager in the alex branch, unfortunately I only tasted it when I got home and it was far for me to go back, I mean who dilutes 100% juice and serves it to customers that was unacceptable because I paid for it and I love McDonald's food but it left a bad taste in my mouth that day