I had the front tires replaced and an alignment done, after picking up the car and driving it started shaking, they said the rack and suspension needed replacing, how can they complete the alignment with the suspension being bad?

I took my car to the shop to replace the front tires and to get an alignment. I picked up the car, and when driving over 60 MPH the car was shaking all over the place. I took the car back to the shop I asked him to look at the car again, then he told me it was my suspension and then I would need to get it aligned again. I was supposed to go pick up my car and then he told me that it’s my rack and pinion another $450.00. Now I’m out $1,100.00 and still no car. The place that he took my car the first time to get it aligned should have noticed that my suspension and rack and pinion was bad in the first place.