Battery is already dead after 3 years

I loved this vacuum at first, but it has quickly become ineffective. The battery now only lasts 30 seconds and I have been waiting for a replacement from Dyson for over 6 months.

When it worked properly, the vacuum was very good at picking up hair and dust, but could not handle larger debris such as cat food.

The canister that holds the dirt is also very difficult to take off and clean. I find it is very poorly designed.