Comerica Bank review: customer service

I am very upset. I have worked for Smith Mandel & Associates, LLP as Office Manager for over 15 years. I have been doing the deposit and the deposit slip the same for those 15 years. Your teller Gayan Tutyan from the San Fernando Branch in Burbank CA was most condescending and unpleasant person to deal with. She proceeds to tell me how the deposit slip should be filled out and she kept saying the same instructions three times, like she speaking to an idiot (you know like really slow like talking to nit wit) is beyond my scope of tolerance. Then just today I go back in to make another deposit and unfortunately, I get her again. Again, talks to me like I am an idiot yet again but she says I have at least filled out the slip like she wanted them filled out. She says she need to add up my checks first before I can get my receipt. She starts and I have seen teller that know how to 10 keys, which would be no problem, but she is not one of them. By that time, I have had enough and I start complaining. I have never had one of your tellers ever do that to me. She has my receipt right in front of her, so she automatically hands it to me with a laugh and a sarcastic have a nice day. I am extremely angry! If this was my personal bank, I would never return! but unfortunately this is work. I will have to return but you can guarantee that I will never go to her again. If these girls is new she needs more training on her people skills or she needs to find another line of work. The other girls are great but one bad apple can ruin it for all! I spoke to an Armen Martirosyan that justified her rude behavior and whom was getting quite loud with me. He was sorry but saw nothing wrong in anything she did and that he is trying to be nice to me. Not once apologies for her behavior. He gave me another number because there is nothing he can or will do. So, if I wanted to go higher with my complaint I can but as far as he is concerned this Gayan is a five star.