Can you says client service!?

Been waiting almost a month for a sim activation on their system. They keep telling me that they have logged a ticket and each time when I contact them again they can either not find the ticket reference or tell me it was closed. I have tried contacting them more than 8 times without one attempt from their side to call me back or attempt to resolve anything. I finally got a callback now and the agent says that a manager will not speak to me regarding this. This company used to be good, they now have the worst technical, support and management team. This coming from a client that has loyally supported them for 10 years.... Seriously disappointed.