Refund not received

I find Vumatel to be the evilest service provider I've had to deal with in my whole life, I've been chasing them for my refund for over a year now and everybody I've had to deal with would request the very same information I've provided, and Eventually, they told me about a backlog and up to this day there's been zero communication and the matter has not been resolved. I never wanna deal with their *********** service and behavior.