No sale or contract for sale of services, intangible goods, stocks, bonds, or investment opportunities by a telemarketing seller is final or enforce able until the consumer has signed a contract to purchase the same and delivered a signed copy of the contract to the seller. In the case of stocks, bonds, intangible goods, or investment opportunities the signature of the consumer must be acknowledged by a notary public to be enforce able. If a consumer has actually received stocks, bonds, intangible goods, or the investment opportunity prior to signing the required acknowledged contract, the consumer shall return whatever he received if the consumer disavows the transaction.

5 Guam Code Ann. GOVERNMENT OPERATIONS
CH. 32 TRADE PRACTICES AND CONSUMER PROTECTION