Banfield Pet Hospital review: atopica

I took my beagle in for itiching and scratching problems, I had been to another vet who couldn't solve the problem. I had received a coupon for a free visit to banfield. They prescribed cortisone and and antibiotic. They said it was from fleas. They gave my only part of a prescription because they were out and I could pick up the rest the following monday. That cost me $229. On monday, they didn't have that med so they substituted another. None of them stopped the itiching and scracthing. I called about getting apoquel. They said it wasn't available so they gave me two boxes of atopica for $119. After three days of this med, my beagle became very sick, I took him off the med and he recovered. I went to banfield and asked for a refund of the second box that had never been open and was still sealed. They refused. If they knew that this drug was so bad, why did they give my two boxes instead of one and trying it out. I researched this drug and yes, it has very adverse reactions. How it is still on the market? Why overprescribe it? I spent at least $400 and still my baby is scrathing and itching!