No customer care, full payment before call out.

My electricity meter unit was giving problems, I called the service center and they said I should pay upfront the entire invoice before they send a technician out. I had to call multiple times to get the email with the invoice, because they got my email address twice! I had to follow up, no customer care at all. This is absolutely ridiculous that the owner has to pay for a faulty meter which is power measurement's product.