Super Bad Experience

I got an SMS to say my parcel was at the lockers. When I went to collect the parcel, my PIN to collect it has expired. When I contacted The Courier Guy Customer Support, I told them the issue, and they told me they sent me 2 SMS's saying my parcel is ready. I only received one, but they keep initiating that Im Lying. Why would I Lie? Super Bad Experience. Will never use them again.