The Gas Man Centurion does not deliver or perform proper installations

Theo from The Gas Man did shoddy work installing 5 gas geysers for me. He takes forever to do said installations and hardly ever shows up when he undertakes to. His installations are faulty and he does no follow-up to recitify his mistakes. He is quick to take deposits, but does not deliver and only after begging and threats, he may arrive for said installations. He does not correspond properly and when one contacts his wife (her number was given as she supervised an installation at some point) one is met with the rudest, abusive and most unprofessional behaviour from her side. My geysers still don't work properly after 9 months of installationl. No measure of tweaking from our side has an effect. This man ignores messages and reasonable requests. He is completely unreliable and becomes agitated when one demands service. Consumer, please be cautioned!!!