DATA bundles dissapper

I will never recommend Vodacom to anyone. Last month and this month they have been taking my data from my wifi router. I receive 4gb per month, 2gb during the day and 2gb at night. Yesterday(05/09/2017) i had 1.8gb for during the day, today when i check the balance my data are gone. I try to phone Vodacom then i was told the technicians will contact me in 7 working days.Why must i wait for my data ?????I pay them every month so i expect them to resolve this ASAP. I Would not advise any person to switch to Vodacom. I was with MTN for years and i never had issues with them. NOW I REGRET THE DAY I JOINED VODACOM which was last year August(2016).....CANT WAIT TO GET OUT OF ALL VODACOM CONTRACT and go back to MTN for good. Vodacom does not care about their customers.