Ultra Distasteful After Sales Service: Choose them at your own risk

I have an uncapped month-to-month 20/20Mbps data contract with a FairUsagePolicy of 300GB/month before the up/download speeds reduce; which by its nature is pre-paid. I have been cut on 27 July and upon taking the matter customer care (e-mail), Facebook and WhatsApp chat platforms as well as their Call Centre, I'm tossed from pillar to post. It's frustrating to say the least. I'm going to Day 4 without Data, they've deactivated their ZTE router.

This has even been escalated, but still no break-through, as follows: SMC/***