Bad wheel alignment

I am so frustrated and angry at the same time, car time is so gambling with peoples money especially when you’re a woman, not knowing what’s wrong with your car, I am so not happy with thier service, they ******ed me my tires and if I tell them that I need my continental tires they took without my concern they gave me another tires are very old and of poor quality. I am so broken, my car went for a wheel alignment which is R250 but I ended up paying +\~ 6000, after paying that amount my car never went back to normal, if I’m driving at 80km the car vibrates but if I go to 100km per hour it’s okay. I am no hurt shym