Phone locked , several times , sim card pin is not working on Vodacom device , but working on other mobile operators phone

I bought a phone on Contract with Vodacom ,earlier this year , after 5 days the phone stopped working . A call to Vodacom customer care did not help , i was taken from pillar to post , then i was advised to take the phone to Vodacom Shop , which i did , After a week i was told i needed to pay money for the phone to be fixed as they took it out of Warranty. Then i went to Vodashop to collect the phone as i was ready to cancel the contract. But i decided to phone customer care one last time to see if they cannot assist me , which i did , and they helped me the phone was working again .

Yesterday the phone started giving me the same issue , and again i am being taken from pillar to post , the phone is still locked , when i call Vodacom support again , the ticket is logged as the phone is working . I find this annoying as they are not even confirming with me what the exact issue is they are guessing as they always do .

I find this very disturbing , that teh same issue appears again after i had the issue , They are not interested in helping their customers .

I will never buy a contract with Vodacom , ever again