Very poor and disappointing customer service

I did an upgrade on my contract recently and had such terrible service. The phone Huawei P20 lite was advertised with Bluetooth earphones. I have received the phone but without the Bluetooth earphones. I immediately contacted Vodacom to inform them that there was no earphones and that was around two weeks ago and to date i have not receive my earphones. I have contacted the upgrades department on several occasion who are unable to assist me in relation to when i will get my earphones as promised how disappointing is this. I have three contracts with Vodacom and I feel that I must cancel all of them and take my business somewhere else. Can I have a senior person from Vodacom to contact me or look into this problem for me please!!!!!!!!!