Contaminated diesel

Good day. It is now 3 weeks after the incident I had with Engen Bothasig, where it cost me over R25000 to fix my diesel bakkie. The diesel I put in was contaminated. Dirty. Up to now I did not hear anything from engen or the garage. With the samples I have of the contaminated diesel, I think to go public and get myself a very good lawyer to sue engen for mixing paraffin with diesel and I have proof. I lost 2 weeks of work also. While the bakkie was in for repairs