Impossible to get hold of call centre consultant

I lost my phone and have been trying to get through to a call centre to have my phone blacklisted and the sim stopped. I have called every day for 3 days and every time I call, I am on the phone for over an hour, waiting to speak to a consultant and I never get through. <br> <br> I went into a store thinking that it would be easier to speak to a consultant face to face only to be told that we are not able to blacklist phones in a store - it can only be done via the call centre. <br> <br> I decided to then ask a question on the website - it has been more than 24 hours with no response. <br> <br> I understand that there is a strike and that is creating problems for the service provider but this is actually ridiculous!!! Is Mtn going to compensate me for any misuse of my phone since I lost it??? I somehow seriously doubt it. <br> <br> Service providers are supposed to \provide a service"!!!! How does that happen with not answering calls"