New Bed issues

Bought a bed last year in march. Used the bed in November alreary started hearing springs make sounds. Reported at the plaza branch dev and jan 2019 they said they will report to the suppliers and they wud send me a ref number for inspection to be done. I am not happy, i called a few times, went to the shop. All i hear is they will follow untill i went the last time to the shop towards end of jan and i was told they will give me a new bed. Its sunday today no one called. Pls help me speed up the process. If this issue is not fixed by the end of feb and we start march they will most def giv me serious issue in terms of replacing mt bed.