Here are the complete steps of delete kik account. Simply you need to apply the given steps:
Open your current using browser
Go to the https://ws.kik.com/delete.
Enter your account credential and reason for deleting.
After that tick, the box below and click Go.
Now you will get an email from kik open it and tap on Permanently Deactivate.
And your kik account will be permanently deleted.
If you want more clear steps to delete kik account then you can watch the shared video: https://www.youtube.com/watch?v=t68BIs7SmLQ