A/C pressure

My problem is high side pressure was 70 psi, and low side pressure was 100 psi. When filled with R134 refrigerant after vacuum removed at 30 psi. But this vacuum reached very fast within five minutes. And one can refrigerant was not fully filled into low side since the pressure as high as 100 psi at low side, and high side was only 70 psi and both needles were vibrating, and no more refrigerant can fill into system. I stopped run the car with cooling, and there was no cool air came out both front and rear A/C.
Thanks for your comment and instruction to helps to fix the problem!