The telemarketer shall guarantee the goods to be satisfactory to the consumer to the extent that the consumer may, at any time within the ten-day refund period, cancel the sale by notifying the telemarketer in writing, if the consumer returns to the telemarketer the goods sold in substantially the same condition as when the goods were received by the consumer. A telemarketer that has received the notice to cancel from a consumer shall, within thirty days of receipt of the notice:
SDCL 37-30A-11