Advocaat/Jurist gezocht

Toelichting op de werkzaamheden:
I set up one export-import company with another two shareholders from 2015-2017.
The appropriate of share was ,30 % 30% and 40% .

In 2016, another shareolder, wanted to join in, and three shareholders agreed to give him 10% shares
But in 2017 company decided to seperate the three shareholders withdrew their shares.
Both of two shareholders agreed to sigh the paper which showed initial investor can get his share back . But another shareholder refused to sign on the paper.

By now, shareholder sued three of us to the court I do not know how to solve it .

Please
It is better to make appointment with you and hope to get your professional solution
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