Absolutely useless admin department

We have a prepaid account with Courier Guy, where we book collections. It is impossible to book a collection without having funds deposited. Almost four weeks ago, our account suddenly showed it was in debt. As it is a prepaid account, this was clearly a manual entry made by a careless administrator. Attempting to have this resolved is as painful as dealing with a government department. One can't call CG, and can only interact with them via email. Every contact is rep**** to by a different person, and every person says the same thing and does not produce results. "We have sent this to upper management and following the process. This will be resolved ASAP". I would love to know what 'asap' translates to in the world of CG, because after nearly 4 weeks of daily requests for updates on the progress, it certainly seems like it's based on African time - now now, soon soon, or maybe even never.