Lego City 60379 Set from Toyzz Shop Missing Pieces, Need Assistance

Two days ago, I purchased the Lego City set with code 60379 from Toyzz Shop. I started assembling it yesterday, but I found that there are missing pieces, which prevents me from continuing the build. The missing pieces are: 1 piece of 42111115 and 3 pieces of 3200126. I am not sure where to get these missing parts from and would appreciate your assistance in obtaining them.

Please guide me on how I can get the missing pieces, or if there is a way to receive replacements directly. Your prompt response and help in resolving this issue would be greatly appreciated so I can complete the set.