No Customer Care Response

I contacted (via email) Customer Care on Tuesday(12 April), because I was unable to register for a [URL Removed] account on their website with my contract cell number, after my prepaid number has been deleted from the network because of not being in use, according to their generic response email a agent will contact me \within 24 hours\", it's Friday (15 April), I haven't heard anything??? How long should I wait, and is someone going to contact me to sort this out? All my accounts is registered with this email address, so I really need this done ASAP."