DONT TRUST VODACOM REPAIR

HELP PLEASE HI THERE I WILL LIKE TO KNOW WHY DOES VODACOM NOT TELL CLIENTS THAT THERE IMEI NUMBER WILL CHANGE WHEN YOU SEND YOUR PHONE IN FOR A CRACK SCREEN THAT IS WHAT HAPPENND A YEAR AGO JOB NO ********** 9 I DONT UNDERSTAND WHYI GOT A NEW IMEI NO .I TOOK MY PHONE IN ON THE FIRST WEEK OR SECOND WEEK OF MAY 2018 AS I AGAIN NEEDED MY SCREEN FIXED I GO INTO VODACOM TO FIND OUT IF MY PHONE IS READY AS I GOT NO SMS TO SAY I NEED TO COME PICK IT UP THEY GIVE ME A PHONE I PAY R 2734 AND THEN FIND OUT THAT ITS NOT MY PHONE I GAVE THEM BUT ANOTHER SONY THE SECOND TIME NOW I GAVE IT BACK TO VODACOM IN SOMERSET WEST AS I WANT MY PHONE THIS IS NOT ON AS IT IS *****ING IN MY EYES THE JOB NO IS ********** 3 AND HOW CAN THE IMEI NUMBER BE THE SAME AS THE PHONE I GAVE THEN IN MAY CAN SOME PLEASE HAVE A LOOK INTO THIS AS I HAVE EMAILS THAT I CAN FORWARD FROM THE SOMERSET WEST VODACOM . VODACOM CANT JUST GIVE CLIENTS OTHER PHONES WITH OUT ASKING THE CLIENT THAT IS ***** AND *****ING AND CAN YOUR IMEI NUMBER CHANGE I WILL LIKE TO FIND OUT ABOUT THAT .