That's terrible and awful and then terrible again,PK
I'm so sorry that this happened to you (and that poor,poor dying betta) Ugggh it breaks my heart to know he's just sitting there dying right now! Omg, hell's not hot enough for those coldhearted people! I hope their business goes bankrupt!
"Hmmph,I certainly hope someone stabs him in the eye!"
(hee,hee more Simpson's lines for ya
)
Don't beat yourself up! At least somebody (you!) thought about and wanted him in his lifetime
, that's more than what can be said for many a betta out there 
I'm so sorry that this happened to you (and that poor,poor dying betta) Ugggh it breaks my heart to know he's just sitting there dying right now! Omg, hell's not hot enough for those coldhearted people! I hope their business goes bankrupt!"Hmmph,I certainly hope someone stabs him in the eye!"
(hee,hee more Simpson's lines for ya
Don't beat yourself up! At least somebody (you!) thought about and wanted him in his lifetime
, that's more than what can be said for many a betta out there 
The betta trade is all too often sordid enough that to see one die so close to finding a happy home just breaks my heart. A good reporter could tell that story in a way everyone could relate to and understand.
) 


I'm so sorry !!! you tried your very best for him