Supersonic - super shocking

For the last 5 months we have Logged several cases for support. To say we are frustrated would be an understatement. From clueless support staff, promises to call back.....still waiting. Staff who hang up on you. And yet the billing department runs seamlessly. Worse than a badly run government department.... in addition the managers are never available.... I am writing this as an absolute last resort and a last request for a solution. I have a case number in the event that somebody, anybody would bother to resolve.