Have you ever tried any ACTUAL medications aimed at treating Depression and Anxiety though? The logical thing is not to start with an ADHD-drug, when you have been diagnosed with two entirely different diseases...
If you are only depressed and have anxiety, then Amphetamine could send you literally into h*ll itself - it can cause BOTH depression and Anxiety, in particular.
The first dosage is often the most euphoric one, but after that...! There are many with severe anxiety-disorders whom will find that the drug will break their very mind...
UNless of course, your anxiety and depression is really secondary, caused by an underlying ADHD-diagnosis, which then causes such problems with your environment that you develop depression and anxiety as a result.
If that is the case, then you may get it prescribed legally by your local psychiatric Dr. I suggest you get yourself checked out for such a diagnosis and thoroughly evaluated - it could, after all, be the missing piece of the puzzle towards explaining why your anxiety and depression seemingly does not respond to regular treatments.
In the meantime, I suggest you contact your local psychiatric care unit and ask for a new prescription - Buproprion (wellbutrin, voxra), is the one substance easily available in Europe, legally, which has properties similar to Amphetamine.
You could also ask for Reboxetine (edronax, et c) an antidepressant with effects on Norepinephrine - it works in a similar manor to the ADHD-drug Atomoxetine (strattera), and is actually also currently under investigation as an ADHD-drug.
None of the drugs above are first-line agents for the treatment of anxiety though - and you should be aware that stimulating compounds can often worsen anxiety.
I could also suggest grey-area drugs for you, from the black market, but I see nothing in your writing which suggests that you have the knowledge and discipline to handle self-medication in a responsible manor, so I won't. I suggest that others don't do so either.