Beware of After Sales service!

I must admit that the level of after sales service from this company is utterly atrocious. After buying quite a big rig from them (over 100k spent) I had issues with programs crashing, after doing some analysis on my end it turned out that the memory that was installed is faulty. Now the drama starts - there is absolutely no care in the world from this company for after sales service. Trying to get these units replaced by them has been utterly frustrating. I have asked for a contact person in management to discuss this predicament - there answer is that there is no manager available and there solution stands. I live in Zambia and would need to send them the units via courier. After sending them the faulty units they came back and said I need to send them the other two before they will replace them from the supplier. This means I will be without a computer for close to a month? In what world do these people live in that this is an acceptable solution? They then said I can buy more memory whilst they are replacing the faulty units, What would I do with the memory as there are no slots available for 6 units and how is this a customer centric solution??

I strongly suggest you think twice before ordering from this company, because if you have an issue you will be run from pillar to post to try and resolve the issue if they bother to respond.