Frustrated Fedex Customer

I would like to complain about the bad customer service experience I have received from Fedex for an International Parcel I was suppose to received in September 2020. I have paid for this parcel to be couried in due time of a week but till today nobody has come back to apologize and explain reasons for the delay. The lady but the name of Ruth who was handling my case since September has not been following up consistently instead last week of Feb 2021 when I complained again of bad service and frustration I am going through as a customer she handed my case over to an agent who has never communicated with me. I am very disappointed at the service I have received as I have been a loyal with Fedex for years. The financial loss as I do not know whether they lost my parcel or not. Nobody was able to inform me as to what happened to the parcel I paid for. I submitted all confidential documents for customs duty they requested and my package is still not here today. Please assist me would really appreciate your help. God bless