Hello Dania-
Greetings from your fellow passenger. Sorry to hear that you had a bad experience at the gate. As this forum is customer-to-customer, would your relay your complaint in an email directly to SW Customer Relations if you haven't done so yet:
https://support.southwest.com/helpcenter/s/email-us
That would help ensure that this gets properly reviewed. Also, SW Community forum postings are publicly accessible. Are you able to edit your post and remove your flight's confirmation number? If you can't, our staff moderator @CarlyeThornton should be able to assist.
Also, based on your message, did you speak directly with the agent watching the gate podium? If so, the next time you fly, I would speak to a Customer Service Agent either at the Check-in counter or at any staffed SW Customer Service desk (different from the gate podium). They may be able to better assist you with Preboarding (Board First) or Extra-Time-to-Board assistance (Board in between A & B groups) based on this medical need which should help assure you're sitting together and have access to your carry-on bags.
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