Shockingly bad service

I handed my laptop in at Fluerdal Altech Autopage last year October. The reason for this was that the laptop did not want to switch on. The laptop was still within its guarantee period. The laptop has been with them since then, and as I was told sent to various persons or companies for repairs or to find the cause of the problem. I have logged a previous complaint on this site to which I got a response from Sifiso stating that I could go and collect the laptop in 2 days time. Upon my arrival I was told that the battery has gone on the laptop and that it was for my account. The screen of the laptop is now also broken. The laptop was given to them with no !!! broken screen, and I was told that it has been booked in before which it was not. If this is the case they should provide me with a reference number or job number for this so called previous booking in???? The service, is pathetic from this company. I have been paying for an item I have not had in over 4 months. They broke the laptop in their possession, and is blaming it on me. IF I AM NOT CONTACTED BACK BY SOMEONE IN AN AUTHORITY POSITION I WILL!!!!!! PUT THIS ON EVERY SOCIAL MEDIA NETWORK PAGE I CAN GET MY HANDS ON.