NOT Bad Service because there is NOOOO service

Bad bad bad. No other word can describe the service you get. Lodge a complaint on the internet and received a reference number and the said will receive feedback after 15 business days. Complaint on their Facebook Page as well and they keep telling me they gave it through to the customer services department. Well, it's a month later and NO ONE made any kind of contact with me as yet. This is really pathetic as you can't get a contact number or email for some kind of senior person you can take your complaint. What to do next????