Data Contract Pricing

I have been eligible for an upgrade since the 10th of March and I have not had any contact from Vodacom regarding this, furthermore I have tried to contact the upgrades department today (24 March) only to get the message that unfortunately the call centre is unavailable and nobody has answered my online chat for nearly 1 hour, my biggest issue is that all the competitors offer a much better deal at a cheaper price and you get more data.