LTE Contact unusable

I have purchased the 80GB LTE from DSL Telecom and received my device and sim yesterday.

When connecting everything the router displayed "no service". After contacting Telkom on 081 180 I was told to wait an additional 24 hours for the sim card to be activated.

I do not see why I have to wait 24 hours for my sim card to activate as when I bought my Galaxy S8 from MTN my sim was activate when a I left the store.

They need to activate this sim today or im returning everything and cancelling this contract.