If you have defaulted on >300 bucks of bills, then surely M1
has the right to pull the plug until you pay up.
Alternatively, they could cut your line completely after 3-4
warning letters. Then you have to pay another activation fee to
re-start again. How would you feel then?
On the other hand, if you have been a regular customer who pays the
bills on time, you can ask under special circumstances to hold
payment for 1-2 months, especially if you have a clean track
record.