Bad service and zero feedback

I contacted Multichoice with the intention of subscribing to their "price Lock" offer. I answered all their questions and the call-center person said that I would be contacted shortly. Shortly did not arrive and 4 days later I contacted them again only to be told that i would be contacted in48 hours. The time again passed and I contacted them again. I was told that they are very busy and than my number was on a list and I would be contacted automatically. Still no response. I cannot understand how a company can behave like this to potential customers