Payment not allocated

This is really bad service delivery. Payment done since 29 Septemeber 2017 and mail send through to Vodacom accounts since then and many calls done and no one seems to be able to assist. No one knows what to do. Line suspended since . What type service is this? Every call made to the department I am told no mail received. Sort this mess out ASAP. this is the reason why I will cancel all my lines with you guys and all my family who has contracts are disgusted about this experience as they had same issues also.