Clearview Paving

I had my driveway done by this company about 7 years ago, and within the first 4 years, it was starting to show cracks, and now there is a hole forming at the bottom of the driveway, along with bigger cracks, also along the edges I've had grass come through in spots., I don't think they put a thick enough layer of asphalt down to prevent this all from happening. I've even had it sealed once or twice to try and slow the decay.