Having been in this situation myself, no they did not give a lenient time. I got a letter stating that they would shut off my electricity and gas. I had a mere couple of days to sort it out.
In my case it was their fault. I configured automatic payments and they migrated their online system and subsequently dropped my data for payments. Still, they were ruthless about it.
In my case it was their fault. I configured automatic payments and they migrated their online system and subsequently dropped my data for payments. Still, they were ruthless about it.