i dont have enough time to come on how can i cancel my account?

There is an alternative. If you just never come back, your account will sink into oblivion.

Unfortunetly I will never forget this particular user who wants their account deleted and as long as my memories remain my own than that account in particular shall never be forgotten and will continue to remain in the every day thoughts of my head.

Just post a bunch of scat porn under your account and they'll delete it.