So, I had an offer show up on my City ThankYou Preferred for 20% back from Mattress Firm on a single purchase, which I added.. I then made a $5700 online purchase at Mattress Firm.. The transaction hasnt fully posted yet, so it is just showing up in my "Enrolled" section now.. I'm kind of skeptical that I'll get $1100+ back from this, even though I met all of the terms of the offer.. Has anyone else ever had an offer for such a significant amount come up, and did you get your credit?

Mattress Firm 20% back
Expires on Jun 30, 2022 | 25 days left
Redeem Online_instore
Offer For Citi ThankYouŽ Preferred - xxxx
Offer Details
Earn 20% back on any purchase.
Get 20% back at Mattress Firm.
Terms Of Use
Offer expires 06/30/2022. Offer excludes taxes. Not valid with other offers. Offer
valid online or instore and may be redeemed only once. Applicable for the 48 states,
not outside or territories.