Hello, I redeemed my UA miles for a multi stop itinerary on a mix of UA and TK metal. my itinerary is as follows: SFO-CDG (on UA, in economy 30k miles), CDG-IST (on TK, in economy, excursionist perk, 0 miles), IST-SFO (Business, 70k miles)
there are 4 passengers. Initially I had booked the same itinerary all in economy, but some biz class seats opened up the day before my original return date for the IST-SFO leg, so I changed my ticket on UA's website, paid the extra miles and was able to change my flight. I received a confirmation email with new e-ticket #'s for all 4 of us. the PNR for both UA and TK stayed the same. When I went to TK's website and online App, it only showed 3 of the 4 passengers. When I entered the eticket # for the missing passenger, it says that passenger ticket does not exist. I called TK and the confirmed that 3 of the 4 passengers are confirmed, but the 4th is not (name shows up, but no eticket # and no confirmation). I've spent 6+ hours on the phone with different UA agents who all say that everything is fine on their end and all 4 pax are showing as confirmed. I even did a 3 way call with TK and UA and basically TK said there's nothing they can do as UA issued the ticket. I've been on hold with united for hours at a time, waiting for supervisors. I finally got a supervisor who said she'll "reissue" the ticket, but then the call disconnected and the ticket was never reissued. I called back and basically get the same story from every rep, that my ticket is fine and there is no problem. I spoke to mileage plus, but they keep saying I should speak to reservations who basically says everything looks fine.

I'm so frustrated and not sure what to do. If I just cancel and rebook, I risk losing the seats I have. I already checked the SFO-CDG and right now for economy it's 70k pp, not the 30k I paid. I guess I could just cancel segment 2 (CDG-IST) and segment 3 (IST-SFO) and keep segment 1. then go back and modify my reservation to add those 2 exact segements back? that seems the only way I can try to make it work since UA has been no help. Or should I ask them to reissue the ticket? (although I'm on hold for hours because apparently only a supervisor can do this). Any suggestions? Thanks in advance.