OP, did you try to call again? Many times, I 've heard here, if you don't get the expected answer try again.
I had a case very different from yours but it was still an error on tickets about 5 years ago. We had bought DS's family tickets for Christmas . On the trip in April, we decided to turn them into APs. Front desk at BLT said they could handle it. Ok, Next day went to use the AP, CM at gate happen to mention to DS, your AP are good until Nov 12. (the date we bought the tickets) What??? I guess simple mistake, I'll take care of it this evening. Go back to same person at desk. She insisted it was done correctly. Everyone does it this way, even Universal. I called up MS. Hold on, nope, front desk is wrong, but have to correct inside park GS. Ok, we go into, rest of family go on. I wait in line, get to CM. Blah blah. Cm click click click. Yes, the dates are correct. Everything was done proper. I asked for supervisor. Blah blah, he turns to CM and tells her how to fix it to April date. CM acts like this is the first time she has every heard of this.