It comes as the the watchdog has received more than 300 complaints from Isle of Man Energy customers since September last year.
This includes bills not being issued, inaccurate meter readings and problems with direct debits.
The OFT says it's been 'actively engaging' with the gas supplier to help those affected - and although some have been helped, for others, they're no closer to the problems being fixed.
John Wannenburgh MHK, Chair of the OFT, says they will escalate all complaints by vulnerable gas customers to help protect them against unexpected bills, so they can keep up with their payment plans.
Those with concerns can get in touch by calling 686500 or emailing general.fairtrading@gov.im.
Passport and immigration public counters to temporarily close
Overnight delay means today's sailings will set off late
Fireworks displays to kick off with event tonight
Second night of police roadside car checks finds less defects
Society appeals for help about traditional gypsy caravans on the Island
Government issues bird flu warning after infected buzzard found
Will new UK law be brought in to protect Manx renters from mould?
Local Economy Forum launched to propose alternative to 'destructive' min wage increase
