There is a question: how to competently protect your work

At the moment I am developing a corporate identity for one company. I offered several logo options, of which one was chosen. However, after I passed the logo to the customer in a vector form, he decided to replay everything in favor of another option.

I would like to legally (at least, the simplest two-sided contract) protect myself from the fact that the customer can corny someone to the previous version (or use it independently in the future).

I ask because already a couple of times faced with such a situation, but earlier I worked from a company and I was damned (because the company itself had scored), and now I work for myself.
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If you have experience in drafting such contracts I will be grateful if you share them.

PS UPDATE. Additions to the above.
The question is not how to tear off the customer’s money and the first layout, but how to formulate the refusal of a specific logo, design etc, because no one bothers him to say then that the idea he "had a dream."