Poor Customer Service

Highly disappointed at the service I received from Flysafair on Sunday 22.12.2019. My flight was at 10h20 from East London to Cape Town got to their check-in count at 09h35 to chech-in my laggage that I paid for already but was told I can proceed straight to boarding gate with my laggage as I have already checked in online. When I got to the boarding gates I was sent back to the check-in count as my laggage was too big to go inside the aircraft. When I got to check-in count I was told they closed already for checking in laggage but I explained to them that I was there early but was told to go straight to boarding gates. Tried to reason with them with no luck and I ended up leaving my laggage behind with a family member. Immediately once I landed in Cape Town I call your call center and was explained what happened and the lady that was assisting me said she will get back to me as they are investigating the issue, till now I haven't heard from you guys and I need my laggage urgently as I have important items inside like my car keys.