Appauling service

I went to the Telkom store on the 11th of March, I wanted to take out a contract for a laptop that the store didn't have at that time but a very friendly lady named Lesego said I can apply for it then by last Thursday I will have it and to this day I've been waiting. I have not received any call to explain what the delay is and when I call their number (Maponya) there's no response it just rings, I also tried their call centre and again no response you just wait on the queue forever. I fail to understand how such a huge company like Telkom could render such poor service. You walk in their store and you'd swear that they are on point until you leave! I don't know what to do now because I've started school and need this laptop and I don't have the time to go to the bank and request for a stamped bank statement so I can apply at other stores like MTN and Vodacom where they would appreciate you and your business. I'm so unhappy with Telkom!