Samsung string along

During October 2022 I renewed my cellular phone contract and upgraded from the Galaxy S20+ to Z Flip4. I registered the device in the Samsung website and was sent an email telling me In have received a R2000 voucher, but there was no code. I then reached out to Samsung by writing to them by email and calling them. I was assured by email and during the call that they had technical difficulties with the vouchers, but that my voucher would arrive and I was strung along for three months, by the same person, who eventually also sent me an email, informing me of a missing lead form, which was not mentioned during the three months. It will definitely be my last Samsung device after about 20 years. I have screenshots of all the emails as evidence.