Bad service

I went in to the mtn store on Monday to apply for an additional contract for the Sony xperia z2 tablet. She informed that I would get a response in 24 hrs. On Wednesday she sent me an sms to say the contract was approved. Nomvula informed me to collect it. I arrived at 5:45pm only to be informed that the store closed at 5 due to stock taking, she informed that stock taking had already started and couldn't give me the tablet. She informed to collect it from her colleague on Thursday as she would be on her rest day, i couldn't make it to the store as i was working. This morning (friday) i went into the store only for her to inform me the tablet had taken back to the warehouse, and that she would try get it back as no other branches within gauteng had stock of. I feel all of this could have been avoided, and now i have to incur all the inconvenience of having to go back and forth to the store and now will have to go back again that's even if the tablet is still available. Disappointed and frustrated customer.