My bathroom sink plug is stuck closed. It's a push plug (push to close, push again to open). I've not been able to find any videos with the same type of top to the plug, this one doesn't seem to screw off at the top. I have managed to get the pipe underneath off and it's an interdental brush jammed in the plug mechanism from previous homeowners! I can't get the brush out, it's well and truly jammed and unsure how to get the whole plug out. Any help would be greatly appreciated! Hoping to avoid having to get a plumber if possible