If the chat was cleared, a staff member was there and dealt with the situation accordingly. Bans are not shown in chat, so it's most likely you were not aware they were punished. If you know of the name of the player(s) that were spamming, I could check if they were banned for you.
About your caps mute - You were warned twice before you were muted, giving you plenty of time to ease up on your caps.
And as Katrina said, you may report the staff member you think mishandled the situation.
Staff are humans too, and just that - Staff members. Its possible the staff member was looking at forums, or discord, or distracted with something irl - Or even they weren't doing something, and was focused on chat, but took a few seconds to type out the command.
Feel free to open a conversation with me here on the forums, or message me on discord at Anxi#5756 where I'd be happy to assist you further with any questions or concerns you may have.
Thank you for bringing light to the situation, and saying something.