Jens was our contact for North Dallas Concrete. He makes a good first impression, but turns rude when problems occur... 3 big negatives. 1) North Dallas Concrete poured a back patio for us. The concrete was mixed incorrectly, so when it dried there were thumb-sized holes all over one of the three sections. Jens, who had been very friendly was now very difficult to reach. It took 3 weeks of calling and texting for him to come back and look at the patio. Jens was mad and very grumpy, even though it was obvious that the job had been done badly. He protested, but agreed to do it over. 2) As soon as the new replacement concrete dried, it cracked. This was a new job. It dried and cracked in ONE MONTH. This is unacceptable. The concrete was obviously not mixed well the second time. Again it took 2-3 weeks of multiple phone calls and texts before Jens came out to look. However, beware! Jens informed us that it is in the contract that they do not redo or repair cracks. If your concrete cracks, you are out of luck. 3) Finally, Jens and North Dallas Concrete refused to pay for damage done by their crew. The workers damaged a 20-foot stretch of our patio wall siding when they repoured the bad concrete. Jens refused to repair it, or to pay for repairing it. I have no idea how he reconciles that in his mind. It is obvious to anyone that his crew did damage, and the company is responsible. But Jens refused. We could do nothing about it because we had already paid-in-full. If I were you, I would never do business with this company.