I think it'll work something like:Rather one bundle and you have everything covered. Messenger specific bundles are a problem. picture you have massive data for whatsapp but nothing left for facebook and cannot use the same allocation that you have for facebook on whatsapp. Then the interwebs are inundated with messages of why can't the data for one be used for another or one social data bundle for all messaging etc.
I think it's better to go in store when dealing with ISPs. No chances of you almost throwing your phone against a wall because of a useless customer care agentThe web page adverts (at least for CellC) are so convoluted and you get a different explanation from calling Customer Care and going into a CellC store