Very poor service

Good day Good day Candice Thanks for your quick response but I since got no further communication from any one, here is my story not sure who I need to address it to: On the 4th of December 2015 I went to Cash crusaders in Roodepoort to buy 2x 15” Dixon dj speakers 1200watts each, then on the 5th I went back to buy a power amp Dixon MA200 that corresponds with the speakers as advised by the sales guys, speakers were R4 500 and R2 700 I then took the items home in Standerton the Saturday of the 5th of December 2015, they were working well I was happy Then it happened on the 21st of March this year, my brother called me to say the amp is no longer powering the speakers, because the sound kept deteriorating, I then went to google to see what could be the cause and possible solution, I found out that usually if an amp does not match the speakers in terms of watts or vice versa, the amp or the speakers can be damaged,(of which the store manager disputed could be the case) so in my case the amp is 300watts per channel, compared to 2400 watts of the speakers, I then sent the salesperson a WhatsApp message he ignored my message even though he read it, he ignored my calls, and the number on the invoice *** is not working Weekend of the Easter I went to Standerton to test the equipment myself, it was still not working, I then went to cash crusaders in Secunda which is the closest branch for me, so I asked the sales person how do they usually pair speakers to amplifiers, he took the same speakers as I bought, paired them with a Dixon power amp MA400 and a power mixer 350watts, and I can tell you I was so happy the sound was perfect, so since I was convinced my amp was the problem I then bought the Dixon MA400 amplifier with Dixon power mixer 350watts, it cost me R7 000 for both items excluding cables, when I connected these to the speakers, I then came to a conclusion that the speakers actually had a problem, because the sound was still not coming out properly, the one speaker gave a bad sound even Friday of the 8th of April I went to the branch I was so angry because the sales person pretended he did not know which Vusi was calling him and sending him messages, any way I still told him what my problem is, and that I was not happy with the service and treatment from him and wanted to return the goods for a refund, he then told me they do not have warranty on speakers, mind you I bought the items brand new, and I had read the warranty policy, nowhere it mentions what he said (maybe we need to check with the National consumer commission) he then called his manager he uttered the same utterances as the sales guy, I still checked the invoice for the warranty policy, I still could not find it where do they come from, the manager even went as far as telling me I must forget about getting my money back, as angry as I was I took my invoice headed for the door, he then called me back to say, he will arrange with the Secunda branch that they incept the goods then he will arrange for someone to pick them up that side, till today I have not received any call or message from him, and I expected this from him judging by his attitude, please escalate this matter further and I want to return these goods for a full refund. please note that i still have no feedback from Wilma who is regional manager for Gauteng, i also went to their facebook page last week, they only took my contact details just like Wilma did and still not reponse it's almost a month now