Cartrack issues

Cartrack every month stop order is R130 they decide to take R126 from my account instead of R130 few days later they come back and take R37.80 from my account the first month i did call or say anything the following month same strategy take R126 instead of R130.00 few day later R37,80 out of my account

I decide to call and find out they telling me that is because they have been deducting R126,00 instead of R130,00 but the different is like R4,00 why do you take R37,00

Why not take R10 instead of R37,80 cause you deducting lass is not my problem is your problem

Assume the are 10 000 people that have the same problem out there

I mean if you take that R37,80*10 000 people =R370 000 That they are making out of they own making