USELESS ISP VUMATEL SADV

I HAVE PUT UP WITH THIS PATHETIC WIFI SERVICE AND THEY NEVER REPLY ON THAT WHATSAPP CHAT I WANT MY REFUND THEY ARE ****MING ME THEY DOUBLE DEDUCTED IN JUNE AND IM BEING TOLD A TICKET WAS LOGGED AND WHEN I LOGGED IN TO CHECK THERE HAS BEEN NO PROGRESS AND I HAD TO BUY DATA TODAY CAUSE WIFI IS NOT WORKING