I've had a pretty complex itinerary ticketed on SV stock by a shady OTA based in Poland. With some 5 weeks to go, I've received an email from SV advising of a schedule change in the middle. That schedule change caused the connection time to drop to under MCT so was illegal. I've not been too worried about the schedule change and was going to have it fixed at the airport. Unfortunately my OTA have jumped the gun and spoke to SV about the change and SV advised that because of a cryptic "fare inconsistency" they will not offer alternatives and only a refund. I have never seen any of this communication so I have to take what the OTA says at face value. Needless to say, I want to fly my itinerary and the replacement flights are significantly more expensive.
Now, the OTA have cancelled all reservations and the PNR is empty. The eticket is still there with all sectors "open for use". The OTA refuses to reinstate the booking. SV refuses to speak to me because it's an TA-issued ticket.
I'm looking for some advise on what my options are. There are some quirks:
- eticket was issued in MIA
- one sector touches UK soil, but on arrival, so probably can't use UK small claims procedure (unless someone tells me otherwise!)
- one sector departs from CDG, so in principle I could use the small claims procedure in an EU country
- paid for with a US Chase card, so I'm not very clear on the travel protection in this case

And yes, before anyone tells me - I should not have used an OTA, and particularly not a shady one with 2 star rating on TrustPilot...