Poor service is an understatement!

I signed up for a Vodacom data contract and it took me a week with numerous calls trying to change the delivery address from my home address to my work address. Through all this back and forth calls with Vodacom and their courier they kept sending the delivery guy to the home address. On Monday (13/05/2019) I finally received the sim at my work address. I was advised that it would take 24 hours to be activated, but that was not the case. I called ********** , their after sale activation line after 24 hours had passed on Tuesday, they said they will sort it out and should be working in a few hours. I called again later in the day as the sim card was still not active. I called them again today (15/05/2019) in the morning, I couldn't get through apparently because they start working at 09:00 am but the phone kept ringing and redirecting me to retention department, and they kept redirecting my calls in an endless circle. I called them after 9:00 am and finally they picked up and the guy said he will activate it and I should check if it's working after 2 - 5 hours. After 2 hours I checked and it was still not active. This is the worst service I have got from such a big service provider. It is embarrassing and grossly unprofessional. I'm thinking about cancelling the whole thing so that this nightmare can end.