Customer Service is shockingly TERRIBLE

My line was suspended this morning, R127 due, I now cannot even get hold of MTN at ALL. Their 135 number does not allow you to connect while your line is suspended. How am I supposed to get hold of anyone considering proof of payment was sent through this morning??? I have phoned from a landline only to hold for 20 minutes and not even a soul answers their LEGAL COLLECTIONS. How is this legal collections if I made a payment ??? I sent an email to customer service, which can take 4 business days for them to reply. This is ridiculous in my opinion. Quick to spam me, quick to take my money but cannot be quick to action queries. Seriously, something needs to happen ASAP, I want this line open today! Charmaine