Mortein 2x300ML Bungle one is completely empty

Yesterday I went to the Westgate store to purchase a few items and also decide to purchase the Mortein insect spray combo for R34.99. Late yesterday when l removed the yellow wrapper on both the items one can was completely empty. I do not have the time to be running around returning the empty can. I currently work at the Mall of the south and reside in Jabulani. The only time I will try to return to the store will be on Saturday and my question is will l be compensated for my time and petrol?