The thing is that I do love my bed...so please help me to solve this issue,because I don't want to loose that bed and I can't pay other money because I have done that already

My name is Sophy motseo I was a good customer at bears furniture.i took bed at bears in January 2015 it was in stolment I started paying that bed from 2015 until this year on the 4th of June.i did pay all their money..so last week there was a lady who is working at bears she called and telling me that am not finished to pay my account.i have told that lady that I have proof of payment that am done paying my account..she said to me that at bears head off they said am not done paying my bed..then I took my time at go to their nearest branch at jhb which is Lewis so at Lewis they contacted them to ask why they said am not done paying my account,because I have all proof of payment,there was this lady that said they don't what to know nothing I have to pay R1600 the name of that lady is Judy from Lewis at Tsaneen.that lady told me go fax my last receipt of payment I did send all my receipts but they told me that they want money if I am not paying they gonna come to take my bed my bed it was R799.99 so I paid R14640 because of interest and I do hav proof of that.....the account number is ********** 045(BR TZANEEN) my ID is ********** 838087 my phone number is ********** 603