Few days later Binance sent a notification to the sender advising them that they sent the BTC on the wrong network and Binance cannot recover the coins.
On binance, I hope the sender clicked on wallet -> spot -> and on a book-like with a clock icon at the upper right side that will take you to the history -> then clicking on withdrawal. The withdrawal transaction history will be seen and the txid and the address involved can be seen there. You can click on it directly, if you like you can copy it and track it on the explorer of your choice. Everything is transparent.
How do I go about either pulling the BTC through to my Trezor or have it bounce back to the sender.
If sent to the wrong address, not reversible. So sorry. It is good to check and recheck the address you are sending to before pressing on send.
I tried setting up Electrum on all the different networks available and linked to my Trezor however it doesn't bring up anything. Cant even see my existing coins on it despite setting up a Segwit wallet also? Perhaps Im doing something wrong, can anyone help me please?
This is about sending to a wrong address, not about wallet issue. Bitcoin sent to a wrong address in this regard is not reversible and can not be recovered.
Track it on blockchain explorer to know if it is actually correct address or not, if wrong, so sorry it is gone. But if you can not track it yourself, we can help you to do that if you provide your Trezor address and the txid on binance.