Paxi let me pay R100,00 for no service rendered

I paid R100,00 for a bag to send a package to someone. I put in knitted blankets and closed the bag with masking tape. When I wanted to send the bag I was told I am not allowed to use masking tape to close the bag. I told them I did it to prevent the bag from being opened as a previous bag I received were opened. So I asked my R100,00 back so that I can send it via Pudo. My request was denied. So I paid R100,00 for a plastic bag which I cannot use for anything as no service was rendered. I send two emails to their client support, got 2 ticket numbers but no response. I want to send the knitted blankets to someone in Johannesburg who is dying of poverty and hunger. She want to use the wool to knit things to sell for an income.