Bianchi Honda - Service Center

we called to make appt. as there was grinding noise from rear end of my husbands CRV. when we arrived we were told problem was probably rear differntial, as that is what our other vehicle had recently had rear end of my husbands CRV. when we arrived we were told problem was probably rear differntial, as that is what our other vehicle had recently had repaired. Service person said you hear it when you are making a hard turn.....I responded that we didn't hear noise when making hard turn,(which, incidentally, is what I told them when my CRV was repaired not long before)and I asked if there is a way to tell before work is started? Service person rode in car with my husband, and they didn't hear noise. I didn't know until after the fact that the service person said to my husband " I don't have time to check for anyting else, do you want us to change differential fluid or not?" We had fluid changed....mine had been covered under a "recall/service bulletin". When we asked about this, service person stated that in fact mine was covered under warranty, and my husbands warranty was up. We paid to have the fluid changed.....and we left. We continued to hear the noise, and the very next weekend, we took vehicle elsewhere, WITHOUT AN APPOINTMENT, and were VERY QUICKLY told the vehicle needed new brakes and rotors......gee, we had this done at Bianchi less than 10,000 miles before! For two newer cars, we have had a large cost for repairs, and I am truly disappointed that we traveled from Ohio, and were told they didn't have time to investigate any thing else. The other place actually showed us the condition of the brake pads and rotors, and told us that it needed repaired right away to prevent any more serious damage to vehicle. Bianchi has lost our service business, and our new car purchases......We have purchased 5 new vehicles from them over the last 10 years. More