I did not Double spent. I only used third party services to promote transactions, and all to no avail. So how can I be? My transaction be confirmed? 
I regret: mempool min fee not met
In all likelihood, you did the wrong procedure Double spent.
dear friends, help with a dangling transaction, 've tried everything. If you can help, leave a bitcoin address, I will compensate you (it is better to leave the wallet Ethereum, as a bitcoin Commission is very high) My transaction bitcoin efc66a3b991382a331f3631b79bf31b0bef2d9c344f776abae20021ba882721d or https://blockchain.info/tx/efc66a3b991382a331f3631b79bf31b0bef2d9c344f776abae20021ba882721d
addedI regret: mempool min fee not met
In all likelihood, you did the wrong procedure Double spent.