Car rental returned on the 9 october

i am very dissapointed thatb after a full week i had returned the rental vehicle i get smses and calls asking me to return the car.the car was arranged by miway and i picked it up on the 2nd and returned it a week later after my car was fixed. i need my refund ASAP please it is not my problem that your employees can not close an account.let me not receive another sms or call asking me about the return please <br> ***