Still no responce

On Sunday at about 10am I took out a new cell phone contract with Cell C. My previous number was ported and I received the phone but no sim card. I went back to Cell C Cresta and were given a sim card and informed to contact the Cell C customer care and that they will activate the sim and move my existing cell number over to it in 2 hours. I phoned the customer care and were informed that someone will contact me in 24 hours. Over 24 hours later and no one from Cell C bothered to contact me. I phoned Cell C today at 3pm and again informed that someone will contact me in 1 hour.... almost 3 hours have passed and still nothing. MIGRATE THE SIM!