Failed to handle investment correctly

i had an easy access investment with Nedbank on a 3 month fixed period. Last year October it matured and i withdrew a portion of the capital and reinvested the rest. However, that instruction was never actioned. In January i discovered that the rest of the capital had been withdrawn to my savings account. I then called them to rectify this and i was assured that it would be sorted out and that any interest i may have accummulated will be backdated and the capital will be reinvested again. I believed this. Today to my surprise i see that not any of this was done, instead the capital has been sitting in the savings account accummulating nothing and instead im being charged service fees on it. I would like clarity on this, hopefully i hope your calls are recorded to listen in on the conversation i had with one of your agents who assured me he would sort this out back in February.