Missing airtime for the second time.

An issue of missing airtime happening for the second time, the first had been 4-5 months ago when I was told about subscriptions taking R7 and R15 a day from my monthly airtime, I understood that it could've been done by mistake and the consultant assisted by unsubscribing me from them and told me to avoid going into links via SMS and email and unknown sites.

However, last week Thursday (01/03/2018) when I had received my monthly airtime and used only half of it I checked my airtime balance today the 05/03/2018 and saw at least R80 missing airtime. The consultant who I called today as well gave me the same advice and unsubscribed me from the services that I haven't ever heard of or have subscribed to because I had avoided links and unknown sites and only received SMS's and emails from registered services and Vodacom themselves.

I would appreciate it if this issue can be resolved and my missing airtime returned because it is airtime I'm paying for after all.