A bot is sending me some inappropriate messages

My friend told me that there is a giveway on a server and in order to enter he need 10 invite so i joined to server on his invite here is the link to server https://discord.gg/nVYp5k and from there a bot messaged me tons of inappropriate messages and it have the blue bot title just after its name i don't know how it got that title with the message it is sending me i will send the messages in form of screen shot and here is the pic of its profile. sorry for bad English since my first language is Hindi