Birthday party horror

It about the bad service,I had at your branch in diepkloof,I booked for a birthday party on the 7 of May ,for the 25th of May which was yesterday they told me that they has space available which was inside next to the entrance, then I said it's fine,yesterday in the morning I receive,a call from that manager who was assisting us with the booking,he tells me that they made a mistake that space was booked before me,and I paid full,only only to find out the mixed the bookings with the other Lebo who had to finish paying yesterday their balance I was sitted out side he promised me and extra bottle for all this mess,when we ask about the bottle he tells us stories,that the free bottles are finish,service was bad we had to wait long for our orders,my friends had to came to an empty table,the presentation was so bad compare to what the show on the instagram page, Fine I sent the a message about my complain,they apologize and said they'll investigate the matter,I must give them until Tuesday which was on the 28 of May 2019,they didn't come back to me,on the 30 I asked them for feed back,they said some representatives from head office will call me on that day but I didn't receive the call,sent them the message on the 2 of June the told me about that manager who was on duty was on leave,why do I have to be the one running after,they are the one who did me wrong.I was humilated in front of my friends,I feel as if they undermine people,they don't value they customers