Very disappointed and wasted medical funds

I am very dissapointed with my visit this time. Its my second time at this practice and I was happy the first time. I got a different dentist this time because I guess they rotate, she was rough, I haven't experienced such in the many years I've done scheduled or routine cleaning. My boyfriend had the same dentist and he was traumatized, he said he bleed most of the time she was doing the scaling, she even said he deserved a mouth wash for the pain he endured. I understand the aim is to same the gums and the teeth but there is absolutely no reason to be rough. I feel like my medical aid was wasted because when I complained I felt like I was being unreasonable. I guess I have to save up from my own money for proper cleaning elsewhere.