I had amazing sid card story with one provider, where they simply failed to send it upon registration.
For a month and a half I wrote to their alive and embodied customer service agent once every 5 days explaining the situation. Each and every time they promised to resend it to me anew to the same or even to a different address. The place I live in never loses a single letter in a post system and delivers most of them withing three days.
After a month and a half and a threat to get customer authority on their corporate ass, the mail started arriving. All of it. Like 5 different sim cards.
I still wonder where exactly they been all this time.