ABSOLUTELY NO SERVICE FROM CTM

I have purchased tiles and accessories to the value of R30800,00 from CTM. The people at the branch where I shopped could not answer any question on the technical information displayed on the tiles. I have now spent about two hours phoning the customer care center number and various other numbers for their Head Office to try and get the information I require. Nobody bothers to answer a telephone but the top management of CTM expects the public to support their shops. The person that sold me the tiles did not even try to find out about the information I required. So can I ask for someone at CTM that cares about your customers to give me a call. A sales person from Lonehill branch that I spoke to also tried a few times to get through to the Head Office and even he was not successful. At this point in time the one star that I gave you is like 10 stars to many.