Dissatisfied, unhappy client

My name is Zama Dladla Contact number ***…On the 31st of December I was supposed to fly to Durban unfortunately my mother got into an accident which resulted in me not being able to travel anymore, I then contacted Flight Center to cancel my trip the lady that assisted me told me not to worry as I cancelled on time, my ticket will be kept for me under my savings which means I can use it anytime within 12 months… so now I call them to make a fight booking to the same destination Durban I’m now told a complete different story that I need to pay an additional R1000 on top of what I have paid how?💔💔😡😡how can I spend R2000 to fly to Durban on a single trip I’m now told I can’t use another airline but only airlink I’m so dissatisfied, disssapointed and hurt by all this as non of the information was disclosed upon my cancellation I feel ****med …I trusted Flight center but now I regret why I didn’t just book straight from the Airline 😭😭😭😭😭😭😭