Poor service

I received the most pathetic service I could ever ask for. I was advised by a Mondo consultant that I will receive my phone in 3 to 10 working days. I received a call while still busy and I asked the lady to call me back around 12pm as I was going to lunch. She never called back. I took the liberty to phone by myself using my airtime only for the number not to be answered. The number I called is *** which is the one for the Walmer branch. I have been trying for a long time to call them without getting through. If this is the service they are giving their customers then Im never buying something online again. I'd rather fetch it myself. As someone that works in a call center I understand taking calls can be too much but please answer the phones because you might call again tomorrow and I'll be busy again so will that be the same process till my package is not delivered?