does not do the job

This by far is the worst vacuum cleaner I have ever purchased, It does not have good suction even at the maximum level, I have a low pile area rug in the living room I have two dogs  and very little adult traffic in this room and when I vacuum (even though I've read the manual front to back and made all the necessary adjustments it still does not pick up the lint and hair from anything. So! I have to use a lint brush and roll over the rug when I'm done vacuuming. I have a canister vacuum that I purchased from Walmart which is a dirt devil model #40025, in all honesty it is not worth it, So please make sure you do alot of research before purchasing their products. Signed very disappointed!!!!!!!!!!!!