Bad service

Billing I was on compact I was paying R538 monthly now I downgraded to lower package R115 last month I requested amount to pay was R149 and this month its R401 this doesn't make sense I spoke to Andiswa this morning she seems like she doesn't know what I am talking about please help...

*Your account balance:* You're currently enjoying: - DStv Compact *R149.0* is due by *2021/10/19*.

Your Customer Number is: ***0