Single worst business in South Africa - I feel like a hostage

The worst thing about giving this rating is that they don't allow you to give a zero out of five. In all my years I have never had to deal with a company who lacks in every aspect, from the call center, to the average holding on time being excessive, to each person giving a different answer, to the manager not calling back as he said he would, to not being allowed to speak to anyone senior. This will be the third time I am dealing with this excuse for a company and nothing has changed once. I unfortunately have no option but to deal with them and I feel like a hostage and they treat you in a manner that they know you have no alternatives. Why is it that no one will give the details of any of the managers, I think that is because of the sheer number of complaints. Please fire the entire management team and replace them with amoebas as I think the amoebas would be more successful.