Discord making random calls and sending messages

Alright, so last night. I was sleeping in the call with someone. And i had my phone locked. But i wake up at 5 am and openend my phone and saw that i apperently added people to the call which made group chats (4 times) and to one guy there was send a bunch of text coming from me which mostly said ( (@myuser) 3x angj4osmsnfjrisncbfikensjsfkskaoenc) And that for like 6 messages long. Couldnt find anything on the internet like this so im curious how it happends. Cuss its weird.