Extremely Poor Service and No Follow-Up on Unauthorized Premium Increase

I am very disappointed with the service I have received from Netstar.About a month ago, I contacted Netstar to query an increase in my monthly premium that I did not consent to or authorize. During the call, the consultant provided me with a *** and assured me that someone would contact me the following day to discuss the matter and provide feedback.Unfortunately, no one called me back. After waiting for almost a month without any communication, I followed up again yesterday. I was then informed that an email had been escalated to a team leader and that I would receive a call back. Once again, no one has contacted me, and I still have no explanation regarding the premium increase. What is most frustrating is not only the lack of feedback but also the fact that I have had to continuously chase Netstar for answers on an issue that should have been investigated and resolved weeks ago.