No customer support and pathetic service

We placed an online order 2 weeks ago. There was no follow up or communication from Partserve. After calling I finally got put through to Garth who heads up online sales. Needless to say, this charming (not) fellow does not return calls. I then spoke to Louis, national sales manager, who kept making promises only later to tell me they overstated the stock on the website and assured me the item would be in today for testing. He was obviously buying time as I called today to be told hes on leave. I spoke to Garth today and was told another 3 days and then he will give me feedback. After discussing with my manager, we have decided this has gone on too long and also wanted to know why it will take so long to test a part. I called Garth and instead of him taking the call i was put through to Durban. Durban has no record of an item in stock. The lady at the Durban branch has put a query through to Garth to call me and suprise, suprise, no call back. This is absolutely pathetic customer service. You dont treat your customers as an annoyance or behave as if you are too good to take a call. I want feedback.