Virgin Mobile - unacceptable and unprofessional

I app**** for an upgrade 3 weeks ago and spoke to Andrew who told me that there was no stock of the Samsung Mini that I initially wanted. I called back thereafter (23rd September) and spoke to Sebone who convinced me to take the LG G4 instead. I indicated to him that I preferred to have a top up contract as I wanted to manage my expenses better. I was not told that there was no stock. He confirmed via e-mail that the upgrade was approved on the 1st October. I called him again thereafter and he said I should expect the phone in the next 3-5 days. I called on Monday 5th October and spoke to another lady who indicated that there was now a stock issue and that I should call back again later this week. When I called back on 7th Oct I was given another story. I escalated to Pinky Maombera who is a manager on the 7th October and have received no reply or even an acknowledgement of receipt of my mail and that the query is being dealt with.<br> Clearly customer service is not high on the priority list for your company Virgin Mobile.