"Rubbish and no help"

My partner has pathological demand avoidance on the autism spectrum so before we attended we called to ensure I (her partner & carer), and were told that would be fine. However when we arrived and they came for her and said I couldn't come in. After explaining to them her difficulties I still wasn't able to enter because the re were too many people in the room. I've attended my mums scans in the past and there was only ever 1 ultrasound technician so why the need for so many people? After she came out she was in floods of tears due to the stress of being alone with all the strangers, and there was in fact only 1 technician... I can't stress my disappointment and frustration enough. There was nothing done to accommodate her autism or communication difficulties at all. Not happy in the slightest with what happened.