Where is VCA Animal Hospitals Corporate office Headquarters

I have been going to this vet for many yrs. My cat needs meds every day to keep his lungs open. I refill every 2 months. 2 months ago I called in his refill and specifically asked if they would be closed at any point in the day-I was informed NO. I drove the 20 mi and arrived at 1:01PM to find a note on the door stating they were having an impromptu meeting from 1-2PM. It was 102+ degrees that day. They would not open the door to simply hand over his refill leaving me to sit outside in 102+ degree heat for an hour. When they did open the door at 2PM I was heatstroke and understandably upset. Yesterday I called in his refill in the AM and they waited until 4PM to call me and tell me to find another vet. They refused to give me my refill. Why did they wait 2 months to tell me they don’t want my business? leaving me to scramble to find a new vet with only 2 pills left. This is putting my cats life in jeopardy if he doesn’t get his meds daily he will die. This is so unethical – they are being vindictive and malicious and obviously do not care about the health of my cat – but instead want to upset me. They could simply transfer his script to Safeway and they would never have to see or hear from me again but they refuse witholding his medication and jeopardizing his life. This is supposed to be a professional organization yet they are acting like school children. Their behavior is despicable and through the years I have never seen the same vet twice. Their prices are higher than any other vet and they try and make you buy all sorts of things for your animal you don’t need. No Good.