The reason your transaction did not get confirmed most likely is that the server nodes you got connected with were not synced. The servers are not always synced. You can check http://iota.dance/nodes and pay attention to the sync status. The synced servers have the highest numbers and both numbers should be same for one server.

To get your transactions confirmed, 1)making sure you set MWM to 14 and Curl implementation to CCurl in the Configuration under Tools. 2)Making sure the server node is synced is the most important step to make the transactions. 3)The second most important thing is to do the reattaching(not the rebroadcasting) every 30 minutes if your transactions are still pending after you have done the first 2 steps correctly. If you do the above 3 things correctly, your transactions will always get confirmed almost 100% within 1 reattachment and the most of your transactions will get confirmed without the reattachments.