Very Disappointed in Oakville

Last year, 2010, I had a driveway interlock, a side walkway and backyard patio installed by In Home Services. The experience was aweful. It started when I received a call prior to the work being completed by Dave . I was asked if I wanted a 'design' in the work that was to be completed. I responded sure, as they had experience. Well, what I got was a totally different stone then what I selected, as well as hugh 'gaps' between the interlock stones. I stated my dissatisfaction but as the work had been completed in one day (what a rush job, no care in workmanship), they didn't bother doing anything. In the contract it stated the work was guaranteed and they would return to fix any shifted stones in the first year. I called several times this spring 2011, left voice messages, even text messages and NO RESPONSE! Well, my driveway is now sunk, i have hugh gaps in the interlock and after spending a ton of money I am hopeless that I will ever get it fixed.