No after-service from call centre or couriers

Excellent service, until you have a problem..... NO after-service whatsoever. 2 of my parcels are missing. 1 was delivered to the wrong person. After several phone calls, nothing has been done to rectify the situation. Another parcel got lost somewhere between couriers. From TFG to RTT to Courier-It, nobody can tell me where the parcel is and it's been almost 2 months. One call-centre worker told me to go to the store to have my problem dealt with. From the store they phoned the call-centre, who told them they will collect the incorrect parcel and find the correct one. No phone call was received to date. No credit on my credit card. No parcel delivered.