upfront out of pocket payment to complete bitcoin transaction

I'm being asked for $1700 upfront out of pocket payment for 'segwit network confirmation' from bitcoin.com to complete a bitcoin transaction which I am receiving to a wallet on their app. Is this legitmate ? This is for a 20k transaction

this is what support just told me:

"you are correct that typically transaction fees are deducted at the time the transaction is made, and there should not be any additional upfront out of pocket charges for a transaction. However, in this case, the transaction fees were deducted from your external wallet, but the transaction was held on the blockchain network, which caused a delay and resulted in only one confirmation.

To resolve this, we are charging you for SegWit network activation. This fee is standard to activate SegWit and ensure your transaction can be processed successfully. This situation does not happen often, but it is necessary in some cases to ensure smooth processing of transactions.

then I said I wasn't paying and what would happen if that's not paid .. response:

if the segwit network activation fee is not paid, the transaction will remain pending with only one confirmation. Typically, transactions require 3-6 confirmations to be fully processed and spendable. Without these confirmations, the transaction will stay in a pending state and cannot be spent.

To ensure the transaction is completed successfully, the activation fee must be paid. If you choose not to pay the fee, the transaction will remain pending and unspendable."

For a transaction that has already received 1 out of the required 3-6 confirmations, it will not automatically return to the sender's wallet. Instead it will remain pending on the network until it receives the necessary confirmations to be fully processed and spendable.

without the segwit network activation fee being paid, the transaction will stay in this pending state and cannot be completed. Unfortunately, it cannot be returned to the sender's wallet in this state."

I'm not the sender by the way. This was sent to me.

so great, they're holding my funds hostage then