VOX overCHARGING Clients!!!

I am currently on a 100/100 fibre package and about 3 months ago the price reduced due to Vuma dropping prices on their end. The actual package reduced on Vox website and yet i am still being charged the old price. I've emailed and received a single call advising i must log into the client portal and change it myself (1 month ago). I am still being charged the old fee. I used to admire your service but now seems things are going downhill, Its not difficult to update pricing and refund me the overcharge. Do the Right Thing!