Are there an agencies or services that undertake the process on your behalf?
- This commment is unpublished.@Tom Yes, there are immigration lawyers (only an extremely limited number come recommended) and so-called tramidores, who offer their services. As we don't have personal experience with any of them and heard enough unpleasant stories from people who used "someone", we can't and won't recommend anyone. In most cases they are not necessary at all; the process for Migraciones application is personal anyway, filling in the online application is simple and if you have to visit a Migraciones office only you as applicant are allowed in (exception children or handicapped persons). And as you posted under the tourist visa extension article, I fear a lawyer or tramitador won't be able to do anything for you at the moment as (at lest for now) MIgraciones doesn't do extensions.
- This commment is unpublished.@Sunflower Thank you :)