Wrong and Conflicting Information

Good day. About a month ago a chatted online with a lady from Fedhealth Customer services. I had a dentist appointment and I wanted to find out if the dentist was on the Fedhealth Network List. She said yes, and gave me all the details of the dentist including the physical address. So, I went to the dentist, and a few weeks later I received a statement from the dentist that I need to pay the statement. I immediately emailed Fedhealth regarding the matter. A lady phoned me and told me that the dentist is not on the list. That same day, I again chatted online this time with a guy and he told me the dentist is on the Network List. I don't know which lists are they using and it is very confusing. I am very angry and I want answers, why wrong and conflicting information are given to members. I have send 2 emails already, and nobody responded back to me. The service at Fedhealth is not the same it used to be.