Unfortunately, our support team can't provide custom reports based on your specific needs and this is our scope. Anyone with knowledge of databases or basic SQL expertise should be able to write custom queries using the guidance provided in our KQL documentation. You might need to seek that expertise from a 3rd party vendor if you don't have that in your team.
You or your expert can refer to our Introduction to Kayako Query Language (KQL) and especially to Creating Common SLA Reports with KQL for some useful samples.
You should be able to run these samples on your platform without issues, but if you don't, you might find this other article helpful: KQL Troubleshooting.