Are sales jobs always this competitive?
Sales, by their nature, can become competitive as individuals want to stand out, make the sales and create a solid, professional reputation for themselves. That your job is commission-based deriving from sales, is going to add to the competitive environment in your workplace. Ultimately, some people simply do not have the stomach for competitive sales so be honest with yourself and decide if this is right for you.
Yes. When people are paid in commission, it's totally dog-eat-dog. People want to be paid more money and are prepared to fight for it!
You need to have a meeting, and include your boss. Stating there should be a better way to handle and split sales. Such as you can get commissions, but all sales commissions will be split equally by all people on the team.
Yes. And you shouldn't believe them when you take another customer, and they pretend you are doing something wrong. They say whatever works to get you to step aside. You're nice, so telling you to take turns works. If you were vain, they might tell you there's a problem with your face or hair, so you'd retreat to a mirror to check it out. To be good in sales is to be good at being a fake person. One of my main goals for my daughter when she was growing up was that she not wind up in sales or married to a salesman. I don't care if they make more money. It's not worth it, because eventually, they get so good at schmoozing people, they just never turn it off and are fake 24 hours a day.