Poor customer service

I purchased a device through MTN who uses DSV as their courier.

It seems DSV completes the RICA process once they have delivered your device and SIM.

I provided the necessary documents but my SIM is still RICA barred and it has been about 120hrs since my things were delivered.

I followed up with MTN and they said that my RICA process failed with DSV.

I tried to contact DSV to find out why it failed and take the necessary steps to rectify this.

This has been the most impossible task to do because the department that deals with this at DSV do not answer their phones. Extremely hard to get hold of these people.

Not only has this left a sour taste in my mouth but why did they not notify me that my RICA process failed? Were is the customer experience? No attempt from them to resolve this matter with me.

Now I am running after them with no success.

Extremely dissatisfied with the service received.