Homechoice ripping people off

In 2019 i settledmy homechoice account now in 2021 January money has been deducted on my bank account and reversef it they say i owe them now R515how i don't know see the sms below.I owe them nothing why wait year and a half and tell me i owe you.

Miss MAKU Your Homechoice account is in arrears and payment of R515 is overdue. Use Easypay ref no.*** @ Shoprite/Checkers/Spar/PEP. Call ***