Sharjah Municipality

I honestly don’t understand Sharjah Municipality’s way of dealing with customers.
I received a parking fine even though I had paid for the one hour I was parked. Just 9 minutes after receiving the SMS confirmation that my parking payment was successful, I found a fine issued to my car through the Dubai Police app.
I submitted a complaint through Sharjah Municipality’s website, but no one ever contacted me or responded to my complaint. Instead, I simply received an SMS saying that the case had been closed.
Can someone tell me if this is normal? Has anyone else experienced something similar with Sharjah Municipality?