Product: Money transfer, virtual currency, or money service

I am submitting a claim for a refund of {$880.00} and would like Chase Bank to reimburse me back. 

Scenario : I have booked my flight to XXXX  from XXXX  via Chase XXXX using my Chase Rewards on my Chase Sapphire account. 
On XXXX XXXX, 2021, I received an email confirmation of my itinerary On XX/XX/XXXX Chase XXXX  sent a notification email saying one of my flights was cancelled. The flight from XXXX to XXXX was cancelled per the email. 
Called Chase multiple times to get confirmation of new flight made by Chase XXXX. Chase finally booked a new route return home from XXXX to XXXX. 
On XX/XX/XXXX there is a new email confirmation stating my new flight and new return flight home. 
This new flight was also shown on my Chase XXXX XXXX, so I had two proofs of updated flights. 
When I arrived at the airport to fly from XXXX back to XXXX, the airline said my flight was cancelled. I couldnt reach Chase XXXX from XXXX, XXXX. The XXXX XXXX customer service told me I only had the flight from XXXX to XXXX. This flight they said I had was originally CANCELLED per the email! They said I had no new flight and can not get on the plane for the new flight home which is XXXX to XXXX to XXXX. 
I had received NO CANCELLATION EMAIL in regards to the new flight. 
I logged into Chase XXXX Rewards for my flight itinerary and in fact it was still showing up as the new flight. It said I had the XXXX flight XXXX 
They didnt show me the screen where I had no seat reservation. 
XXXX and CHASE did not send any cancellation email informing me of ANY CHANGES. 
I then had to purchase a BRAND NEW ONE WAY FLIGHT from XXXX to XXXX  via XXXX XXXX since I couldnt get on any other flight otherwise it would be over 2 grand and it already has taken me this long to even get my refund of {$880.00} through no fault of my own! Chase XXXX and or XXXX has made a mistaking causing multiple domino effect issues. 
When I found out about the cancel flight, I had to change my hotels and other reservations. Then I had to wait 17 hours at the airport for my next flight. This also caused me to go and take a new last minute Covid test and caused me to take another day off work which I was supposed to be back earlier per my new flight. There were many other things that I had to pay for because of this new flight and all these disruptions in my travel plans due to failure of both CHASE and or XXXX airlines. 
I believe I should actually received more due to all this error made on behalf of CHASE XXXX. 
I should not have to pay for another flight home due to CHASE XXXX  errors. 
I can not dispute this with XXXX XXXX since they did render the service but it is not their fault that CHASE XXXX made a mistake. CHASES XXXX or CHASE customer service needs to reimburse me. I can not report this to XXXX XXXX since it is not a claim for them. 
Having called both CHASE XXXX ( who said they could not help me further than refunding my points back - but this trip was under {$600.00} dollars in points ) and my new one way travel is almost {$900.00}. Customer service said they would reimbursed the different since the new one way was more than the original round trip ticket! But I received a letter 5 days or more later saying they can not resolve my issue.