Bad Service

I app**** for a contract phone on the 30/12/2019 and it was approved but the store never had any stock. I was then told by the Agent who assisted that she would contact me the 2nd week of Jan when the stock arrives to collect the phone. Its been 3 weeks of me calling Telkom myself for feedback to no avail. I would like to know if this can be resolved or if i should just apply elsewhere because this is terrible service.