With over 500 different server installations done we've never failed with single one!
Each installation service is one time job and doesn't include future reinstallation.
We take full responsibility and provide free support for bugs in provided script or instllation,
however free reinstallation or any other service is not included due to server crash, server change or user's script change or modification.
Once installation service completed on server it cannot be a matter of chargeback request!