Shan Construction Services Ltd

My driveway that Shan Construction poured is completely flaking due to poor workmanship. I have reached out to them for a response and they are not responding to me. The driveway was poured in 2020 and is completely failing and falling apart. They said it is due to weather and ice melt. However my driveway is not consistent with those causes and more consistent with a mixture issue and workmanship. New home warranty will not cover this because it is not a structural concern at this point and it's past one year. Shan's website says it warranties all workmanship. I am trying to sell my house and potential buyers have all asked and some have been turned off because of the driveway. This is costing me a potential sale.