No customer service or feedback received

Looking at the reviews for this company, I am not surprised that I’m struggling with the lack of service! I cannot believe that MTN has resorted to using this company that lacks customer service or a sense of urgency. First they call me from a No caller ID number and ask for my ID number to deliver my package, which in this day and age is ridiculous. Then they deliver my package one week later and take my documents to RICA my SIM but that still hasn’t been done and I’ve been following up for the past three days, no communication and still cannot use my SIM! Is there anyone working at this company who can assist? Please MTN, starting to lose faith in your company as well!