Jio — 4g sim card

Dear team, i requested the new jio sim card of number [protected] with on of the local store. He said sim will be activated in 30 min, he tried for some time but not happened. After some time he given me the number 1977 to activate but same has not done. Contacted the customer care, they told me that that sim works at 4g handset only but i dont have the 4g phone. Requesting you please change my number to 3g and activate the sim immeidiately.