ABM Aluminum Gave an 'out the door' quote and then wanted $950 for concrete footing. Lakeland Florida

at time of estimate, The Customer had said he hired a proffessional Paver company to lay his pavers, we were hired to put a screen lanai over the pavers, we provide the customer with an estimate for putting up the screen over an existing paver base that should had been done right from the beginning. long story short the pavers did not had any footers, and we can't put up a building on dirt. so we came to the customer and asked him to call his paver company to have them do the footer, he refuse to that, then we contacted a concrete company for him to do it, the concrete company wanted $1900 to remove pavers add the footers and put them back, so we decided to pay for half of the price to help the customer, even though it was not ours to do. and the Customer didn't want to pay for that, we had already got engineering drawings for pemitting and all the process for the permits so we really wanted to do the work, perhaps the customer should understand that it was not our fault, it was actually his and the company he hired to do the pavers right. 

Customer said the pavers were done proffesional, by a company, so when the pavers were installed they needed to have a footer which they didn't have, when we price the customer he said he did not need the floor, so we based our estimate on the building itself not on the floor, as per engineer sugestions and county permits we were asked to check on the footers for the pavers because it was never permitted, so we found out there was not footers then we told the customer that we were not able to do the job, because of the footers,

so we contacted a concrete company that was charging $1500 to do the footers, so we decided to pay for some of the concrete and the customer obligation was to pay the rest, we were not responsible for the floor as customer request, we had already incurred in engineering costs and permits which was more than $165, the customer already priced 3 other companies that were all above the price we gave him, we explain the customer that we were not to do the concrete footers he could get someone else to do it, we were only contracted for the screen lanai itself. 

we understand customers get disapointed ones in a while but this was not something we mislead, it was a error when they put the pavers.