Truworths harrassing calls

I get harrassing calls and sms's everyday from truworths asking me to pay my outstanding account since they assume that i am miss Ratlali but i do tell them that i am not the person they are looking for its a wrong number. The caller agent insists that i need to pay R610 to my outstanding account, how dò i pay for an account that i do not have? Truworths must sort their contact list and stop harrassing mr please i dont owe them a cent.