Telkom ********** billing and debit orders

Cancelled expired contract in October 2021 at the store and informed that I will get a call from customer service but only got Ref ***3 and on 29 November 2021 got a SMS that ***3 has been resolved but surprisingly 4 months later on 4th February 2022 my account was debited for R1061.07 and approached their store on the 18th February 2022 only got Ref ***0 that my query will be attended to. 21 February 2022 got SMS that my account is due with R6290. 67 what on earth is this for a cancelled expired contract