Honestly,

You are lucky that they even paid you. They sounded like a sham from the beginning and usually these places would rather just not pay you at all for the inconvenience of screwing up their "Summer Camp". You know I really HATE that term too. It's not a summer camp at all.

Do you remember when you went to summer camp? Did it include shoddy buildings and horrible staff? Well maybe it did, but at least it was actually a CAMP with campfires, hiking, swimming and fun.

When Chinese children grow up and hear the word "Summer Camp" they will immediately collapse into a seizure from traumatic memories.

MW