Cash Convertors Grey Owl Village Centurion

I'm a previous employee at Cash Convertors Grey Owl Village. I have resigned from them on the 8 of October 2017 due to my salary went all just for transport to get to work and back. On Saturday the 25 of October 2017 I have received a call from the store Manager asking me where is a piece of Gold neckless which I told her where I remember it was last. The following day on the 26 of October I received a whatsapp message from the store manager that said a cellphone and an iPad was missing to and the Gold necklaces which I don't know about as far as I can remember. On the 27 of October 2017 I received a SMS from the owner of the store and I quote " I you better bring my laptop, cell phone and jewelry back very quickly before you go to jail" this is not acceptable as 19 days after I resigned I need to hear this. I aso did a cash advance on my cellphone which I went to collect on the 29 October 2017 which I paid in cash know suddenly my phone is not in the safe I paid for it back before the 6 when it expired I have writing on the payment paper that I have paid for it and did not received I have asked the buyer Issac to signe and make me a copy of the invoice. Should I take this mater legally further cause who is going to pay my transport to go again and collect my phone?? I do not wish to speak or to see the manager and owner of grey owl village. Can you please let me know what should I do? Another thing I really think what they pay their staff is not right as well cause I got paid R2500 a month which is below the minimum wage of the government then I was told I will get R3000 then after I was told I'm only getting R2500 a month which I could not aford to pay for transport from Witpoortjie to centurion so my mother convince me to rather resigne from my post. So please can you assist me in this situation or should I rather continue with legal action against the store/ owner? Cause this is not right