https://pool.viabtc.com/tools/txaccelerator/
They offer free acceleration for 100 transactions every hour, so if you submit your transaction at eg. 9 PM sharp you have a chance to get your transaction included in the next block that gets mined by ViaBTC. If you're too late, just try again at the next full hour.
This only works if a sufficient fee is paid. If a too low fee is paid then ViaBTC is not used because it will not accept txid. There is nothing left to wait for some of the miners to take over the transaction.
Given the current state of the mempool it is very well possible that OP paid too low a fee for a timely confirmation, but enough of a fee for ViaBTC to accept it. According to their website as little as 10 sat/B is enough for them to accept a transaction, so it's worth a shot. The tricky part is timing your submission right and getting one of the free slots.