Bad service

I renewed my contract, was told I can collect it the next day as they had stock of both phones. When I went to collect the phones the next day, Justice was off but I was promised I will be called to be provided with feedback. To date no-one has called me. Customer service can't assist me as I was told to visit the store directly. Can't call the landline as it just rings *** and goes to voicemail. I'm not happy with the service and want to cancel as I have had many people calling me to upgrade and I had to decline as I don't know what's happening.