Maxis automatically upgraded my plan without my consent/permission. They said when I purchased an add-on, they automatically upgraded my plan. Does it even make sense? If an add-on was purchased, it's an add-on, not an upgrade. To make matter worse, I don't even remember purchasing it actually... as I clearly remember I only overused my data but didn't purchase the add-on.

The customer service rep over the phone was trying hard to avoid my inquiries regarding their illegal practice.

Has anyone else faced a similar issue? I'm definitely filing a consumer complaint with the KPDNHEP.