Hello & Welcome, CountingSheeps. It certainly sounds as if you are dealing with drug-resistant and/or treatment resistant depression.
Here are a couple PsychCentral articles dealing with alternative treatments:
Alternative Treatments for Depression - Grohol
Alternative Treatments for Depression - Borresen
Your psychiatrist has ruled out ECT, but is TMS/rTMS available in your health care system? Do you currently have access to both a psychiatrist and a psychologist/therapist?
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My dog
mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.