Waiting long long time for cancelation refund

Follow up for the complaint (Ref: 1- ********** ********** ), after many days, on 26Oct2017 they sent Courier Guy and collected the 3 parcels which are going to be canceled and refund the extra change to my acc. But now an half month has gone and no Vodacom officer contact me and no refund ,we have to stop the debit order to avoid their extra change. It is a very very bad service from Vodacom!!!