POOR SERVICE ON PROMOTIONS

On the 1/2/22 i upgraded my cell contract through MTN the Glen i took a samsung S21 FE that comes with a free tablet. The claim was processed and approved on the 9/2/22 as per the promitions department and was told that i would recieve my tablet within 7 to 10 working days. I have been calling them since the 28 Feb and everytime i am told its been given to the courier company and i will recieve the tablet. On the 1 March 2022 I have requested to speak to a manager at the call centre and was put through to Demakhatso and she said i would recieve it the next week. The next week i still have not recieved it and tried calling and everytime the manager is off sick or in a meeting i left countless messages for her to call me but dont get a call back. On the 16 March again i called and was told i will recive it by monday and to date still have not recieved it. This is poor service and would like to know what us happening with my promotion that i took.