DrainScope plumbing & drains

we searched yellow pages for a 24hr plumb company. Our drain backed up in our basement washroom and required immediate response. Our call was returned within 5 min, even though it was close to midnight. A licensed plumber showed up to our door close to 1am. He submitted to us a copy of his license to give us a sense of relief. He told us other companies do not send licensed plumbers for drain snaking which was a surprise to me? which I cannot verify as I have not used others. Regardless, the service was fantastic, also was the price. Thanks to plumber with the nice smile, you made me and my roomate two happy girls!