Thickening Golf Hitting Mat

I originally purchased the 4X5 mat, after about 800 cuts with the irons it started to wear out a bit, which is understandable but a little bit on the frustrating side of things as I expected it to last longer. I contacted the seller and let them know about the wearing issue and to see if this was normal. The seller got back to me in under 24 hours and had already prepared a replacement mat to be sent out, a few days later it showed up at the house. They had upgraded the mat to the 4X6 mat which had a much better feel and quality. I have taken close to 600 iron cuts on it and it is holding up much better than the original 4X5 mat that I purchased. The seller let me know they have been working on the new mat for a while to make it last longer. So far, so good, and I cant say enough about the customer service I received from the seller. Top notch for sure. Will definitely purchase another one once I wear this one out.