bad service

Telkom in parow center have the baddest customer service I app**** for a contract 2 weeks ago thy send a sms a week later saying the deal is closed no explination I phoned thy never picked up eventually after 10 days thy pick up an said thy investigating an never return your call..now u apply for the laptop u ask for pink thy cant tell u what box is pink or blue what happened to stock codes,is that the way how to keep your clients happy? So what do I do in this situation