MTN contract for comb intercom

[Tim_vb]

We have a comb access control intercom in our complex that uses an MTN SIM (Vodacom dies in our area during load shedding). I'm trying to find an MTN contract with the following

• per second billing
• 1 000 SMS
• 200 all net mins
• Month to month

Its proven difficult as all the call centre agent just start reading off a script trying to sell at R1k p/m sky contract