Recommend a Service Provider?

[ajax]

I'm on the Voda 2+2GB 12 month promo that started last year for R150 pm (including usb modem stick)

If I finish those gigs it starts charging me R2 per MB but I think it's because it's an old contract

Yes, the original promo wasn't available on a topup basis. The promo's this year are.

[sajunky]

I'm on the Voda 2+2GB 12 month promo that started last year for R150 pm (including usb modem stick)

If I finish those gigs it starts charging me R2 per MB but I think it's because it's an old contract

Not because it is old. But definitely yes, as you have Night-OWL data, it will go OOB. If you sign a new contract today with Night-OWL option it will be the same. Nothing has changed, as explained below:
- contract with Night-OWL - OOB shark
- contract data only without Nigh-OWL, no OOB unless you load airtime, then OOB as above

[CoolBug]

Yes, the original promo wasn't available on a topup basis. The promo's this year are.

Was facepalming in the shop when they said I couldn't top up with data bundles, glad this has changed

[ajax]

Also worth mentioning are MTN's new deals. Some very similar to Vodacom's.
See page 14/15 here

The OOB costs on the MTN deal according to this add at 19c/MB are much lower than on Vodacom,
I'm sure I saw it mentioned for MTN that their normal contract deals are also available on topup, can't find that add now.

Vodacom asks R1 per MB OOB on contract and R2 per MB on topup

Promotional MyGig 2 bundle, out-of-bundle rates
Broadband Standard MyGig 2 Contract - R1 / MB including VAT
Broadband Standard MyGig 2 Top Up Contract - R2 / MB including VAT

But if you don't load extra airtime on topup your internet connection will just cutoff when the inclusive data is finished.

[ajax]

Was facepalming in the shop when they said I couldn't top up with data bundles, glad this has changed

Haha, it's difficult sometimes to word yourself such that they understand what you want.
Just point them to this link
Clearly states available on topup.

Or have Ockie's (ocleroux's) number on standby - he will sort them out.