Still waiting. Very poor feedback and resolution skills

I'm still waiting for someone to contact me regarding the resolution of the error on your side regarding my billing. I've logged a complaint on Hellopeter on 30 May. I've been struggling with this issue since 25 May. I'm not getting any proper service or resolution. I'm very frustrated already. It's as if know one knows what's going on. Is there anyone out there that can help or escalate this matter to a higher management?