Disappointing Service

I'm so unsatisfied with your service. I order for collection and there was no record of my order upon arrival at Debonairs Yarona Shopping Center. I called again only to find out there was a "system glitch". I was contacted back and offered an upsize (Medium pizza) as "apology" and was notified I will only pay the amount I intially order for (R49.80). Come delivery I paid the intial medium pizza amount ( R96 or do - didn't even recieve a slip. Now getting feedback as what's actually going on is an issue. Yarone store manager keeps on transferring me to non- contact number and no one can give me a response. I'm very ****ef and need some answers. This is not great customer service!!!