Hi Karoll,
How do arabic letters behave? Do you have special fonts for them, or do they work in every normal font? Because this might be a font problem.

But my other suggestion would be to use Adobe Illustrator to create a vector and then import it into maya. If you don't have access to Illustrator you could also try Inkscape. But I must admit, that I dont know the exact way how to do it in these two programs...
Just look for a few tutorials and you should get it.

Hope you'll finish today