What if you do not claim against Casa Culture but the registered company instead?
The retail name is just a signage that the registered business used in marketing their products.
I'm currently using Mio bundled package 8Mbps. Facing the same issue - connection becomes slow esp late night. Last week, I checked via Speed Test and result is less than 1Mbps. Which are you subscribing to now? Pls share.. thks.