City Wide Movers

I hired City Wide Movers to conduct a local move within Calgary. Prior to the move, they provided me with a quote and time estimate of 3-5 hours at $95/hour. It ended up taking over 8 hours (but I was only charged for 8 hours after complaining). The workers were very slow moving and took many long smoke breaks. I indicated at the time that I was unhappy with their pace, but the workers indicated I had to pay the balance in full and then contact the office the next day to discuss my issues. I have now been trying to contact the company for 2 weeks and they won't return calls or emails. I am seeking a refund for 3 hours of work as this is what I was quoted and what it should have taken based on previous moves.