HORRIFIC! Thompson's installed a drainage system on a house we recently purchased. The Lifetime Warranty was transferred to us, and when water began to enter the crawlspace and subsequently, our den, Thompson's refused to comply with their guarantee. The customer service is non-existent - every time we needed them to come out, we had to wait at least a week, and when the tech would come, he would state he was not prepared to do the work that day. The first time I called to say water was coming in, I was told ""Call back when something is floating."" Really?!?
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