Shein Client Services Unreachable.

I am so frustrated. I placed my order on the 9th of March 2024 and spent about R4000 worth of clothing online and entered my cellphone number incorrectly by one digit. I tried to correct it and to no avail. I am finding it impossible to make contact with anyone to assist me. I can see that the clothes have arrived at customs but obviously, I am not getting the notification SMS to pay the customs duty. I cannot get hold of anyone either on the Buffalo website or Amarex to assist me. I only get the Chat Bot functionality with no appropriate selection. What next.