Jaywalking Traffic Violation

My family and I were crossing the road from an exit of Souq Waqif, towards the Fanar Mosque side. There was no zebra crossing whatsoever so we crossed directly from the path ahead of the Souq's exit. A bunch of people did. There was a policeman on the Fanar side of the road, who asked to see our IDs. We thought he was just checking the validity or so. He scanned it, thanked us and that was it. An hour later, we received messages charging us QR 200 each for jaywalking.

I've been living in Qatar all my life, and my parents have too, for nearly 30 years. This has NEVER happened anywhere.
Plus, people were stopped randomly, while the rest just slipped away.

Please let me know what I could do, or if you know anyone that could help.