How do I contact someone to extend my payment arrangement?

Both my Home Services and Mobility accounts are overdue so I had to set up payment arrangements for them, the only issue is the due dates are Dec 3 and Dec 6 and the total owing is $1427 which on top of my monthly bills and cost of living is not doable unfortunatly.  I tried asking in the chat to speak with somebody to at least extend the due date for my mobility arrangement and was issued a call back, but when I answered and hit #1 to speak with an agent I was cut off.  Is there a way I can just message somebody or speak with somebody online rather than by phone?