Worst Customer experience ever

Worst service ever I Have been waiting on a resolutions agent /manager to assist with my complaint it is been a month since i have this query and no one is able to assist, all they saying is we waiting on feedback/ someone will call you back My last interaction was with Lydia Van Dyk who is avoiding my calls and emails, i called last week they customer service number and was advise Lydia is oh leave who is a manager and there is no one who can assist in her absence and they are not sure when she will return. Here i am waiting to have my query resolve and she is enjoying her leave - as a manager that is extremely bad - what if one of her consultants went on leave without delegating their work or knowing that a customer is waiting on feedback