I am a bed wetter, but why are my Family members and cousins mocking at me?

I had never been dry since i was born, so, i was wearing diapers till the age of 5, or 6. Then, i had a determination to stop. I tried not sleeping for the whole night, dehydrate myself and other nonsense idea i had. But it all failed, then i started researching the whole google. And i could not really find a free guide or a healthy one, i don't want drugs, sprays or alarms. I wanted those natural type of cure, if you know what i meant, :(. i really wanted to stop all these. I went to camps, and i did not sleep. Cousins came to my house for a sleepover, i was really scared, and pissed off. why do they always come? What if the secret is revealed? One of my cousin is a total.. Act cute. She acts in front of my older sister and other cousins, but when she is with me and her sister, she treats me like a freak. i Pat her on the back, then she cried, and said i beat her really hard. And i had always hated her for real. That time i sprained my back and legs, she punched and kicked me for a lot of times, i actually wanted to tell my mum, but she won't believe it. :(, my whole body was actually red. And hurts a lot. back to the point! They came for a sleepover, i was using my nomarl technique putting a layer of plastic and a towel over my ***. then, i fell asleep, i peed, as per nomarl.. Then the Older cousin went to touch my area and it felt wet, she let off a quick scream, and she told her younger sister, and her god sister. i cried, then i was panicking. "They are so childish! They are sure to let the cat out of the bag!" then, my mum told them not to tell others, no matter what. Then they told their mother, :(. I cannot trust them. Then i went to brush my teeth, i closed the door, They and my sister were laughing at me. I felt, embarrassed.. Then After a few months, family came, then Other cousin who is older then me and my older sister, and my other family members, gathered for my father's birthday. Then, the Old old cousin, sat on my bed, then small childish cousin said "Got pee you still dare sit? Dirty!" then the old old cousin asked me if i wet the bed, then the small cousin said "yes, she wet the bed, its funny!" then i felt like crying, i felt like drink beer and never come back sober again. I feel like slapping the cousin and abusing her until her bones break, help me! I am scared that she tells her other friends. I am afraid i would abuse her too. I can't, it is not the right thing to do.