Poor customer relation

On the 28 I request for diesel and an operator mistakenly poured petrol.

After they draining the petrol out under the car and they fiddled with the gage and it’s no longer working. It only signal that there is no diesel Even when it’s actually full.

It’s been 3weeks driving the car without signal it very stressful n expensive.

I send the email to them n head office. I haven’t received any response.