Mission to upgrade DSTV price lock

I have been trying to upgrade my compact package on price lock to premium for over 2 weeks as we made a mistake and actually want the premium package. The frustration is they are not calling me despite sending at least 10 messages via Multi-choice who are unable to help me and can only escalate the query to price lock department. My advise to anyone I know would be avoid upgrading to Explorer with price lock as the non existent call center is non attainable and non responsive?