EPG Gas not reifflable

I ordered gas online from EPG Gas about a year ago and they swapped my LP Gas bottles for EPG Gas bottles. As a general client I was unaware that when you move our of JHB area, you cannot use their bottles anywhere else! As a result I am now stuck with 2 x 9kg bottles and cannot get refills! Manager that called me said I must drive back to JHB as I should have known...