Wrongly diagnosing water leak

Had Cape Leak Detection come and "detect" a leak in my shower as there was water dripping through the ceiling in the flat below. After they "repaired" the leaking shower, the water continued to drip through to the flat below at a constant, steady rate. My tenants then identified a leaking hot water pipe connection in the kitchen which is on the other side of the bathroom wall. Once that was repaired the water stopped dripping into the flat below within a few hours. Emailed them and asked if their work held any warranty for mis-diagnosing, but was told that their diagnosis was not wrong. Poor service. Will never use them again. Should have checked HelloPeter before using them as I see others had similar issues.