Unresolved problem

We've had an issue with our geyser which was replaced late last year by a contactor for Absa insurance. Ever since, we've been getting shocked. We reported the problem to Absa and they've sent people out to us twice, first time they said nothings wrong, second time they say it's fixed. But we still get shocked whenever dealing with water in the house. We were told to then contact the municipality. They came out and also said all was good . But still we shock. Eventually we get our own electrician that finds the geyser to be the problem. Absa said someone would be out to see us today but no one came!! This is so frustrating. With the geyser switched off we no longer shock. But for months we have this issue. There's more to this problem. But I would just be writing an essay if I carry on. The issue was plain, but I don't know whether to blame Absa or the people they contract.