Rifle riven rip off

[(PSN)Da_Kine_99]

I purchase a rifle Riven [Rifle Crita-insisus] for a lot of plat and it is now gone from my inventory.... does anyone no if this happen to anyone else? And who do we contact? I took screenshots before it happened

[NovusNova]

"4/14/2020 - Hotfix #1 

Generic Rifle Riven Hotdrop
Yesterday we Hotdropped a fix that addressed the generic Rifle Riven by removing the ability to roll/Trade a generic Rifle Riven. 

For those that own a generic Rifle Riven, this Hotfix will overwrite & reroll to an eligible Riven of a specific weapon, and then refund any Endo/Kuva that was spent on the generic Rifle Riven.

If you have Traded for X and you do not like your replacement Riven please contact Support for further options!"

From: https://forums.warframe.com/topic/1183586-ps4-operation-scarlet-spear-update-2739-hotfixes/

Your generic rifle riven was rerolled into a riven for a specific weapon, if you are unhappy with this you will need to contact support about it.

Support: http://support.warframe.com/

[(PSN)SeekerLoki]

Generic rivens where not suppose to exist.  DE randomly assigned them to a weapon and refunded your endo / kuva.  For traded rivens they said you can reach out to support.