BAD SERVICE ON WARRANTY AT SLEEPMASTERS

Hello I bought a bed on 29 Th October and the springs of the bed is going ping pong when you climb into or out from the bed and is very unstable . I phoned Wonderpark branch and spoke to Mavis who said she is the manager and told her about my problem .Her tel no: ********** 540. She suggested i must buy a new bed from them ,because they are having now specials ,and did not attend to my complain . She said someone of sleep master will contact me .since today nothing happened . I lodged a complain on the customer care of sleep-master on 10 march and there was no reply since then .When i phoned them today they told me they now lodged a complain .I had R720,00 cost of fission treatment yet and need to follow up which will cost me R400,00 per visit .I didn't had back pain so severe like nowadays .The lady Chante at customer care says they will have to see if they will need to replace it under the quality guarantee of 1 year and in the mean time i am suffering from pain and need to pay for treatment for physio .