Canon India — canon dslr 800d

I am unable to transfer my pictures to my laptop either by wire or by wifi, i have followed the procedure given in the user manual, but its not working. I have called the customer care several times but they do not give proper solution, if i ask them to help on the call, they will give you the salesperson number, who won't even answer your call. Then i called back the customer care, and asked to register a complain, they cut my call. This is the worst service i have ever experienced. The camera pictures and quality is excellent but what is the use, when you can't upload them. This is worst service given when we spend so much amount on the camera and the lenses.