Non existent service from MWEB

On the 29th of July I requested my line speed to be upgraded after I received an email from MWEB. The person helping me was very friendly and we sorted outed the upgrade. Or so I thought. The consultant said the upgrade would take a maximum of 7 days to complete. I phoned after 7 days to enquire what the problem is and why my line was not upgraded. After holding on for 45 minutes, I finally got through to someone saying that the original consultant did something wrong with the order and that she will phone me back within 5-10 minutes to rectify it. That was on the 6th of August. Since then NOTHING! Even a promise on Facebook to look into it was a lie. Absolutely no feedback is given. Not even a callback to say they are attending to the problem. If this is the level of service you get when upgrading (and essentially wanting to give them MORE money) I shudder to think what will happen if I ever need to stop my account!