#consumer rights

What actions can be taken if you suspect a fuel shortage during refueling at a gas station and the operator refuses to conduct a check?

I use the services of the YASNO company and have noticed that my electricity bills do not decrease during power outages. Do they have the right to charge like this? What consumer protection mechanisms exist in such cases?

Emergency power outages have been introduced in our area due to attacks on the energy system. I am interested in whether there are any legal mechanisms to protect consumer rights in such a situation?