Md. Code Ann., Com. Law § 14-303
If the seller violates any provision of § 14-302 of this subtitle, the buyer may cancel the door-to-door sale by notifying the seller in any manner and by any means of his intention to cancel.
Added by Acts 1975, c. 49, § 3, eff. July 1, 1975.
Formerly Art. 83, § 30.