Poor work and no value for money

Hi

I originally thought a good job was done when they did the tar in my front yard. It has only been about 7 months since they did and there are potholes forming and cracks. I have on several occasions asked that they come out to fix it and no one is responsing to my request. They gave me a 5 year guarantee and now are avoiding me. They gave me all these promises that they do not do poor quality work but it is just as poor as the people they are bad mouthing. Just not happy and feel like I wasted money