Stay away from Supersonic

Signed up for 20 meg, only got 12 meg, they suggested that i upgrade to a 50 meg package, then only did i get between 18 & 20 meg. I logged a call. The consultant then told me that, "that is how it is with Air Fibre, 50meg is never guaranteed". I asked her to escalate it to management and asked that thy must call me. Untill now waiting for that call. Why charge me for 50 meg but only give 20 meg. I accidently made a double payment, still waiting for refund.