New bike Seat Swivels

[mcruiser]

I just bought a new Pacific Cruiser bike. But I'm having trouble with the seat. I tightened the quick release and it works. My problem is with the seat itself. The seat swivels when I sit on it. It feels like it will pop off when riding. Anyone know what I can do to fix it? I also need to tilt the seat forward slightly, the nose points up and is really uncomfortable. Under the seat, the attachments seem cheap. They have already come off twice when I was trying to figure out how to make the seat tight and keep it from turning on it's own. Almost as if the post doesn't quite fit it. Any help would be great. Thanks.

[Surly LHT]

This is easy to do look at your saddle or seat what ever you want to call it the seat where it sits on the post there will be a bolt and there will be a nut on both side of it just tight these up a little and you should be fine. I know you said you have a QR on your seat post that part you did good on just look at the bolt I told you about and you will be fine hope this helps.