Got Gas keeps my payment

I am renting a unit in an estate called Mulberry Lane Fourways. <br> <br> Sometime in July/August 2015, i offered 2 x empty 19kg cylinders to Got Gas through Nash for sale. I phoned and spoke to Nash before handing over the cylinders to staff of Got Gas. Nash accepted responsibiltiy and requested my banking details. <br> <br> Till date i have neither been paid for the 2 cylinders nor have the cylinders returned to me. Each time i phone and speak to Nash he acknowledges the agreement and then asks me for my banking details afresh. I have obliged Nash more than 3 times yet i have still not been paid. I have requested proof of payment once made yet have received nothing from Got Gas. It is now a frustrating experience and i will be taking this matter forward if Hellopeter does not yield the necessary result.<br> <br> I will like either payment for the 2 x cylinders or the 2 x cylinders returned to me. <br> <br> Thank you<br> <br> adeola