Vodacom very poor service

My husband ended his contact with Vodacom and got a contract with Telkom. He wanted to port his number so I went to a Telkom store wich is 100 kilometers away to start the process. On the 14th of March Vodacom send him a sms with a OTP nr which he must send back if he want to do the port. He sended it back an he was told its the wrong OTP. I called them and asked how this was possible and I was told they can't help me I must go back to a Telkom store. I can't travel 100 kilometers every time because they made a fault. I got screenshots of the conversation as proof.