Hi Eleni, I will pm you. Danielle I agree , it's quite scary with a baby. A couple on my visa trip had a 3 month old. Everything turned out ok but it was quite nerve wrecking. Unfortunately with thai immigration laws there only a few options, and a few of us have used one company many times with no issues and no accidents.
My friend has also done several tourist visa runs using the same visa company , most recent run in August - no issues. Malaysia tends to be more strict with south africans than other nationalities so I would definitely use a visa company to get you through the nitty gritty
I'm south african and I did my non B in Penang, no issues. But I did it using a visa company crossing the land border - more time consuming but less stress (once you surevive the visa van). You don't even have to show up at the embassy, the agent submits everything, you tour Penang, get your non B the next day and off you go. But make sure your school /agency has supplied you with ALL the correct documents.