I am glad that you are admitting that technically you are the one who made the mistake, yet at the same time asking them if there is anything that they are going to be able to do in regards to reversing or refunding portions of the transaction amount.. ..
It's my mistake and I can't blame them for that. Even if they don't refund me, I'm okay with that because as I said, it was my mistake. The reason why I post here is that I'm sure this mistake can easily be fixed because I sent 2x amount of money on their wallet address and they sent me 50% of it to Bitcoin LN invoice. So, they have the rest 50% in their wallet and they won't experience any financial loss if they refund me that.
The support already contacted me and I'll update this post.
The response was ultra fast and I appreciate that.They are all bots.