Is 7D HIFU as effective as Ultherapy or did I waste my money?

I made an appt to get what I thought was ultherapy for thighs and face. The clinic called it ultratherapy (red flag #1), but never corrected me when I called it ultherapy. Red flag #2 was the price. I still went through with my thighs. I felt a little stinging when they did the back of 1 of my legs but then ABSOLUTELY NOTHING for the rest. Afterwards I googled machines and realized I was treated with a 7D HIFU machine. Does this machine work? Should I cancel my face appt? Is this safe?