Prenatal Peek Ultra Sound

Not happy with this place at all . I went there to get my 3d 4d ultrasound and I could not hear my baby's heart beat music was too loud. I was told by management to come back and they would fix the beer beat instead the tech who thy have working there erased my original video with go pictures with a cd that has blob looking images and a recording of my inside of my stomach which is not my baby's heart beat. This is my first baby I'm so upset and I just want them to fix it if I would have know she was doing this to be mean I would have never went back to try to fix her mistake I would have left it alone. Who does that to someone when this is someone's baby and it suppose to be a special experience . She ruin it for me and my husband . I hope when I go back they will fix her mistake !