I paid Jaco around $900 to come in and lift a concrete slab in a rental property I own. They did the work but the slab fell in 6 months and they came back and honored their warranty. 6 months later the slab fell again and they came back in between my tenants and they told me they needed to address the foundation before lifting the slab again. I approved the $7000+ for them to pier the property. They came out and dug under the property but then stopped and told me my foundation was not below the frost line so they could not do the work. I had no choice but to move tenants in again while I figured out the problem. They told me IN AN EMAIL at this time that they would come back and lift the slab again since it was in the warranty period. 1.5 years later I found a company who said they could do the foundation work and give me a guarantee their piers would work and it would hold. I have scheduled for this company to do this work. Then I called Jaco to lift the slab once I have the other company do the foundation work, like they said they would. They told me they would not do the work unless I gave them the piering job??? This is no way to do business. Warranties are not contingent on future work. This is horrible for a company to take advantage of someone like this. They do not stand by their warranty OR their work. They will only warranty their work if I pay them for a larger job? This company cannot be trusted and have taken advantage of the situation to leverage future jobs. I would never do business with a company like this ever.