Not with them but planning to move. Their website doesn't have the old doUncapped anymore so I assume you are already on 2Mbps speed so when your line gets upgraded you will get full speedCan someone who has TelkomInternet as their ISP answer a question. Once you've upgraded the line, is the data/ISP side automatically bumped up as well.
http://www.do.co.za/broadband/offerings/telkom-internet-plans/uncapped/do-uncapped-up-to-1mbps/