TNT express SA NEEDS TO BE REMOVED AS A COURIER COMPANY! After paying customs clearance they sent my package back to customs in Johannesburg

TNT express SA NEEDS TO BE REMOVED AS A COURIER COMPANY! After paying customs clearance they sent my package back to customs in Johannesburg. I have sent numerous amounts of emails and phone calls but I have received NO RESPONSE! If they charge me extra for sending it back to customs they can very well forget that I will pay that! If need be I will get lawyers involved because after seeing all the complaints about them online I'm sure I'm not the only one that would like to take them on! This is absolutely useless!