They have a system to speed it up - in my case it was $300. Kinda fuck this!
Any idea how long it may take to get funds transferred with their transaction fee?
You can try this transaction accelerator. It is free but only has 100 slots available and you have to wait until Via BTC solves a block.
https://pool.viabtc.com/tools/txaccelerator/Also, you may want to see if the transaction that you are trying to send has parent transactions that are also unconfirmed. At the fee that Hashnest has set of 20000 sats,(which is less that 100 sats per byte,) it may take quite sometime to have the transaction be processed normally, if ever. Also, does Bitmain even use the whole 20000 sats to send your transaction or are they setting an even lower fee to broadcast and skimming?
$300 for bitmain to have you use their transaction accelerator.

That is really a rip off.
Here is a web page that will give you an idea of the current state of the mempool.
https://core.jochen-hoenicke.de/queue/#24h