Bad Service

We lay-byed a bed end of November 2014, paid it in full on the 21st December 2015. Had the bed for 2 weeks and the spring started making a noise this is a Royal Ashton Mattress (slumberland) bed was R6000. So I contacted the sales lady at Joshua Door Kuilsriver main road to let her know, they send me a sms the 13th January 2015 to say they have logged the complain. When I spoke to the manufacturers on the 21st January 2015 they told me the complaint was logged on the 17th January 2015. So on the 29th January 2015 I called them because the guy said he will send a sms if we have been authorised a new bed, the lady informed me it has been authorised but there is no communication, I went in to the store (Joshua door Kuilsriver) and the Manager Berni told me they are just the middleman and I must contact the call center to find out what the progress is. So I must use my own airtime and fight my own battle to get feedback regarding the bed, I then bought airtime and called the call centre, to find out the guy didn't get back to me. What am I to do as I am really not impress with the service. Waiting your reply. Zandre