Deceptive Advertising - Free month subscription ****!!!!

"GET A FREE MONTH ON US" they said and I believed them. I signed up with Supersonic based on their Facebook promo for one-month free subscription. I used the promo code "UNLOCKSUPERSONIC". This was just a ****, they have been invoicing without fail or delay even. When I called them in the first month I was promised it would be sorted on the next invoice, it still hasn't. You guys keep finding ways to disappoint.