There are lots of services offering for free in services section you guys are not reading honestly you can read sticky thread here which is can help you how to understand and how to prevent this kind of transaction.. I think the free service from viabtc and antpool right now will not work because there are lots of users right now are using it..
Please read the sticky thread first here
https://bitcointalk.org/index.php?topic=1802212.0And there is a 2 option that i think can help you to confirm your transaction is to double spend and child-pays-for-parent this 2 method will work if you have extra bitcoin in your wallet..
Also there is a paid version that i think working and safe you can try the paid service here
https://pool.viabtc.com/tools/txaccelerator/Also you can try to use free services in services section if you don't have any extra bitcoin you can use their service for free here
https://bitcointalk.org/index.php?board=52.0But don't expect that they are guaranteed working to accelerate your transaction..
So next time always check the miners fee and use the default fee from
http://bitcoinfees.earn.com/ 
