Bad service

I had an upgrade done 2weeks ago and she said I should expect delivery of the phone the following week. The following week came and no delivery arrived. I called several times but I couldn't get a hold of her. I spoke to another lady who informed me that the payment was scheduled for after the 15th October and that I should wait till then. Today I called again and spoke to another lady (because i couldn't get a hold of Samu) who informed me that their courier company had been hijacked and that's why there was a delay. I'm really fed up with the bad service. The fact that they don't inform customers of the progress of the process is really annoying. A whole 2 weeks I've had to call several times to find out what is going on, when they should be the ones calling and keeping me updated