We were mislead in quotes and multiple components of our job. Told estimator everything we wanted done yet we were invoiced for every visit. Estimator was not familiar of technical aspects of system he was selling. Final cost to us 20-25% over our expectation. Invoices incorrect charging for items included in the original estimate. Management inflexible. Once obligations of vendor are met relationship is finished. Excercise caution, do not trust quotes.