Disgusted with the Customer Service

So in the month of October 2018 my husband a loyal MTN client did an upgrade on his contract and gave me an option to pick which phone I wanted , I hesitated but since he had a good experience with Samsung we settled on a Samsung S8 phone .All the paper work was dealt with at MTN Tygervalley store. Last week something horrible happened to me while getting out of my car my phone fell onto the ground and the screen cracked. I immediately contacted my husband ,he called Samsung who then told us we had to pay plus minus 4k to replace the screen because we had 30 days to register for the Samsung service and that it is too late now .Well firstly this has never happened to me and nobody at the MTN store informed us of this process as we would have definitely taken this step .Now we are being send from MTN TO SAMSUNG BACK TO MTN ---TOTALLY DISGUSTED AND WILL DEFINITELY NOT PURCHASE A SAMASUNG OR DO BUSINESS WITH MTN AGAIN.