still not sorted out even after all the phone call

I went into our local MTN store to upgrade my package from a my chat 100 to a my chat 350 so first i don't get any prorate airtime witch was ok because it was only 5 days until my top up then the 20th comes and no top up so the next day i phone the call center and the lady tells me no their having a problem the airtime will be allocated in the course of the day so the next morning i get loaded with a 100 min so i go into the store and he said that our package is showing 350 on one part and 100 on another so he logged a fault. the next day i get a invoice for R 644.39 after the lady that did our migration said my bill would be R385 so i phone once again and the lady Ref *** said she would log a fault and they will fix it .so yesterday i went into the store again and they gave me a new ref*** and its still not fixed and i have tried to log a complaint on there website and surprise suprise it dose not complete the process but if you do a compliment it fly's throw .stop with your lies about my package being correctly migrated and fix it and give me back my R194 airtime that went missing less then an hour after loading it . i think your service is going down the drain fast