Mat's wife Mala is the owner of the Rsa-rsa Ceria cake and bread shop. On September 30th, Mala sold her business to Manja. Manja stated that she intends to continue the cake business and also uses the same name, Rsa-rsa Ceria. Two weeks later, Mala's good friend, Rusla had ordered cakes and bread from Rsa-rsa Ceria for her son's birthday party for RM 300.00. Rusla has also paid a deposit of RM100.00. Two days later, Rusla finds out that Rsa-rsa Ceria has been sold to Manja. Rusla wants to cancel the order.

Advise Rusla. Support your answer with legal provisions and ONE (1) decided case for the situation.