Originally Posted by
mmff
Keep all your communications brief, concise and emotionless.
In principle, all you need to do is to calmly repeat the facts to your bank:
1) you booked an LH flight from A to B (via FRA) on date x,
2) LH cancelled your flights in date y,
3) you requested a refund in date z,
4) LH failed to process the refund until date z+7 as mandated by EC261/2004 and reiterated in the latest EC notice letters.
You should attach proof of 1), 2) and 3). Good luck.
I had a somewhat similar situation, but with Ethiopian Airlines. I did a dispute with Chase. I did pretty much exactly what you outlined here. I had bought the tickets through the Chase Travel portal, so I had to go through them. I also contacted Ethiopian Airlines directly. I submitted to Chase my original itineraries, the cancellations, the offer for vouchers, and screenshots of my conversations (via chat) with both Chase Travel and Ethiopian Airlines. I also included a copy of the DOT's warning to airlines about passengers of canceled flights being entitled to refunds, not vouchers.
The dispute is still being processed, but the charges have been credited for now.