BAD CUSTOMER SERVICE

I was informed my External Hard drive (that went in for repairs, under warranty) was not able to be transported back to Dion Wired Cresta, after it was fixed, due to transport problems from their supplier. THAT WAS 3 days ago (23/06/2015). I was informed it would be in the store on the next day (24/06/2015). It's now the 26th, and after NUMEROUS telephone requests to speak to, and e-mails to 'Tayyibah Mohamed' without any feedback, i am highly disappointed. I have had to cancel business proposals and journeys to other provinces, DUE TO THE LACK OF FEEDBACK. Disgusted. All it takes is a call to apologise, YET NOT ONE WORD, OR E-MAIL!