Fedex.... Where is my Parcel?

My 90 year old grandmother in the UK has hand-knitted me some jerseys for my baby girl who will be arriving in a week, She originally wanted to send them through the postal service until I informed her that our postal service in SA is non-existent but rather use a courier service as they will definitely get the parcel to me timeously. She decided to use FEDEX and the parcel was collected in the UK on Wednesday 15 July 2020 and she was charged for priority service which was supposed to be delivered to me in SA on Friday 17 July 2020. By Sunday 19 July I hadn't received anything and when we tracked the parcel it said there was some sort of delay beyond their control. I then received an sms requesting my ID number for clearance, which I sent through. It is now Friday 24 July 2020. Nothing has changed when I track the parcel, it still says clearance delay. I have tried phoning customer care 3 times and each time I sat on hold for 15-20 minutes and never got through to anyone. I have emailed about 5 times and never get a solid answer and have also tried the virtual assistant which bombs out after I reach the front of the queue. I have never experienced such bad service from a courier company. I would really like someone to get back to me ASAP with an actual answer as to when I will be receiving my parcel if at all. This is a very special gift that I am waiting for. P.s. I definitely wouldn't recommend using FEDEX to anyone in the future!