Difference between: 'I dont have' vs 'I m not having'?

[Arya]

'I dont have' and 'I m not having'

are they same?

[Torsten]

None of your sentences are correct because they contain punctuation errors. Here are some examples that illustrate the difference between both constructions:

I don't have a car. (possession)
I'm not having breakfast right now. (action)

I don't have any idea.
I'm not having a good time.

Also, your question should read 'Do they mean the same thing'?

TOEIC listening, talks: News report

[Chenly]

Hi,
Can I say " i'm having an appointment tomorrow " so it's the future , right ?