We had the skirt of our driveway redone last year and it looks horrible. The contractor that did it said the dark lines you see in the picture below were from the sealant. He explained that the lines would fade as the sealant sets in. Here we are 1.5 years later and the lines are still prevalent and atrocious.

A couple months after the concrete was poured I noticed the lines were not fading. I called back to learn the number is disconnected. It looks like the concrete contractor went out of business. I can see why.

How can I fix this? Are the lines I see indeed a poor sealing job? Is there any way to strip the seal and reseal? Could I apply a pigmented sealant from sherwin-williams over (someone suggested this to me)?

Please help!!!!!