Appalling customer service with a refusal to tailor service to varying customer needs

Appalling customer service with a refusal to tailor service to varying customer needs. Every package change (even a simple upgrade/downgrade for data) requires a new sim. Courier does not arrange delivery beforehand and delivers to the home address whereas most people work so won't be home and the package needs to be received personally meaning delivery fails the first time every time. Still waiting on some kind of update/explanation from management.