If the consumer sends payment to the telemarketer in the form of a personal check, cash, or any other form of payment other than credit card without having included a signed written confirmation, the consumer may choose at any time to 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 they were received by the consumer. A telemarketer that has received such notice to cancel from a consumer shall, within ten business days:
SDCL 37-30A-7