just pray for it to get confirmed or wait for the transaction to be out of mempool and you will receive your coins back make sure add some transaction fee so this could not be happen again
How long going to wait for it to be out of mempool?
people rarely even check the announcement topic of an altcoin, now you are asking a completely technical question! the chances of getting an answer here are very small.
go find their announcement topic and ask their or ask the started in a PM.
or go find their source code and look through it to see how much they set it to.
for bitcoin it is 72 hours and it is not a guarantee. if this coin has copied anything from BTC, it may be 72 hours too.