Working with unscrupulous agents

I just had an experience with an unethical Realtor. It was an inexpensive house and last week when I was supposed to go show it with my client (and he being the Realtor was going to be there) the other Realtor called me up and said that there would not be any showing because he just received a contract and that the seller was probably going to sign it. He didn't have a fully executed contract yet but denied us getting to see the house and he denied us the chance at puting in an offer. It is just a shame that we have to continue to work in our industry with unethical agents as they put a bad taste in the communities mouths and sometimes we actually wonder why these people feel this way. We soon forget where it comes from. Oh well, just had to expend some of the energy that has been building up. Thank you for taking the time to read this. Have a fantastic day!