Shrymp

We just purchased a semi inground swim spa. We are on our third electrician and now trying to pass the inspection of the wiring. We are now told that we need a ground wiring all the way around the swim spa 18" down. Its an enclosed swim spa that was put in 24" under ground and backfilled. This whole project has been a nightmare. The inspector did not want to speak to the electrician just my husband who has no electrical background. He just failed our inspection. The report was confusing to the certified electric company and the inspector has not returned or answer any of the phone call or text so they can verify what needs to be done to pass the electrical. We have a conduit going underground. The inspector wrote that we need to go down 12" under pavement. We re-dug even more to get to the 12". Now we are told 18" underground. How many times do we have to dig to get our swimspa electrical passed.