the service at Lewis furnishers is very bad and poor

i bought a sound system in February 2017,it is broken,i complaint to the vanderbijlpark branch and to the head office,i have spoken to the lady by the name of Deadre but guess what,im still in the dark.first of all they took 2weeks to send someone to come check and take the sound system,after that I'm still waiting another 2 weeks for them to return it,i don't know whether it is fixed or not,but month end they are too quick to call for payments,i will not advise anyone to buy from Lewis furnishers at all,