VERY UNPROFESSIONAL AND UNEFFICIENT

I went to store to collect my parcel and because I went there after 8 days, my parcel had been picked u by Pargo courier and sent back to depot. So I contacted Pargo and asked if they can send back to me and will pay delivery fee again so they contacted the sender for a new waybill number. I have called 20 times and spoke to different consultants and the person I was dealing with Andre is always busy but he said he is waiting for his guys to find the parcel at the depot. It's been 3 months now and still I am waiting. Then I called again and spoke to a helpful lady Thulisile and she called me back and said that parcel is probably lost and their manger will be calling me which I am still waiting up to today. This is a very unprofessional courier service and because they lost my parcel, it's only right that I be reimbursed or the sender but nobody seems to care. They were very quick to take back the parcel and their period to collect items is too short. I am very unhappy and disappointed and I can't seem to resolve this issue with them.