*****ing money!!!

I bought a Nelson Mandela coin in 2012 for R20000. I wanted to sell it last year (2017). They told me to wait for a couple of years blah blah blah but I told them I want to sell. Eventually I asked to get my coin back so I can sell it myself. Now its story after story!!! I arranged for my cousin to pick it up for me and they said I should have that in writting and send her ID copy- I did but they still won't give me my coin bac****! *******!!!! *****ing our hard earned money!!! I paid for the coin I should get it bac****! Its my property!!!