Own experience
پوسٹڈ بايئ Hannes De Wit انرر جرمنی فورم
Hi. I concur with Frank regarding Goethe.
I'm in Cape Town, South Africa and have just written my A2 exam. The legal requirement for entering Germany is A1, but I decided to continue my studies at Goethe in order to actually learn the language. Frankly, it would be disrespectful not to learn the language of your adoptive country.
Anyway, I digress. Goethe is definately a good option and is preferred by the German authorities.
Good luck!!