Apparently it's a small-to-medium size firm. People tend to be pressured with loads of ad-hoc demands. In this situation things like this could happen! However, it is NOT your problem. The management has more responsibilities. They should not overload you to the extreme. They shall help you in terms of work schedule and priority. They shall give you a clearer instructure.
It is NOT YOUR fault, not your mistake. Stick on this.
Don't believe the "trust" you enjoyed. They just found you were easy to be "abused". Westerners are not the Chinese. They wouldn't reward somone who they took some advantage over. They appreciate someone more who needs to be treated equally!
The "trust" you used to enjoy in fact is one of the last things you would like to get to help your career
