Airtime Advance deductions that dont make sense

Guys

Vodacom keeps deducting amounts from my airtime and claiming that I am repaying them back for airtime advances. This started last year but I paid no mind to it.

Thing is, I don't even use the airtime advance option so this is pure theft.

When I try to call them to sort this out, you cant even get to speak to a person as they have multiple useless functions that help customers with anything.

Just on a side note: guys please simplify that 135 number, just make it able for customers to speak to a consultant, there is no point in introducing functions that don't help us.