I reached out to the receiving exchange and they are not able to help.
If you sent an enormous amount, you better double-check their ToS, see if they really can't get the fund back.
Is there any way i could get this transaction reversed or at least sent back to the original sending address? Is it anything I could do at all?
Nope, cryptocurrencies do not work this way, any confirmed transaction within the blockchain won't be reversible, well it theoretically can, but in your case, there is nothing you can do.
Is it anything I could do at all?
If you think the amount is worth to getting back, as I said it first, try to examine the ToS, see whether the exchange stated any wrong payment information or statement about it. If they are able to help, sometimes there are fees required to get the funds back, and it might take a long process and I think you have to deal with KYC and that kind of stuff. Or if the exchange can't help, then there is nothing you can do but to learn it as a lesson.
How do i go about doing this ? What exactly is Tos?