Sunkissed and Marylin Thomas

 Marilyn Thomas
purchased a pool heater from Sunkissed.  The
contract read that the pool was to delivered and installed for a price of
$1000.00. The pool heater was delivered to Marilyn’s residence, but the
delivery slip was signed by Nancy Thompson. 
Marilyn did not know of anyone by that name.  She called Sunkissed to advise the company to
move the heater indoors.  She was afraid
the heater might be damaged or stolen. 
The heater remained in her driveway for four days.  When Marilyn noticed that the heater had been
removed she again called Sunkissed, but she was told “not to worry.” When
Sunkissed showed up to install the heater, they realized that the heater had
been stolen. Who was responsible for the
loss of the heater?  Fully explain your
answer