So, I've been to the SII office in Talagante, and explained the situation. They say this is not a regional office, and directed me to Fernando Riesco 33, Maipu. Dpto en Fiscalzacion. I didn't fancy a wasted trip, so first I called 23951000 which I thought was the number for Maipu but I must have been mistaken because I end up speaking to someone in Santiago. They then told me that actually I should go not to Maipu, but to Romero 3226 which is more central in Santiago. Also, no appointment in advance with this mysterious regional director, might have to go a person just to get the appointment or find out what to do.
Well, I've been told two different things about where to go, so someone must be wrong. Anyway, I think I'll go Santiago centre. At least there is other stuff I can done round there so not a completely wasted trip.
Now then...has anyone ever applied for this extension yet and got any story to tell? It's been a year and a half since this was last brought up, so thought I'd try. There must be people with more than three years gaining foreign sourced income, so what's everyone's story?
Feel free to use private message if you prefer.