It's important to understand that "Asante" is a language in itself, distinct from Twi. While both are Akan languages, they are not mutually intelligible.
If you want to say "thank you" in Twi, you would say "Medaase" or "M'abre".
If you want to say "thank you" in Asante, you would say "M'adie" or "M'akyekyere".
Please specify which language you'd like to say "thank you" in for a more accurate translation.