Router data allocation not received

I had a WiFi router contract with Telkom which ended on the 3rd of March 2020. I was charged a pro-rata fee for the 3 days in March, for which data was allocated to my router. I was, however, unable to connect to my WiFi from the first of March, for reasons that were unknown to me. I received an SMS from Telkkm explaining that they were having connectivity issues and would notify me once those issues were solved. Couldn't connect for the remainder of my contract (from end of February until and including 3rd of March) and just assumed that once the issues were resolved, I would be allocated the data I was not able to use while they were experiencing technical issues. I called their customer service centre and was told that because the contract had ended, they couldn't look back into my records, and that the data was lost even if it's their fault that I couldn't use the data. Which I seriously feel is ridiculous. I paid for data, they allocated it to me, but I was not able to use it. And now I'm told that its lost because the contract ended. If it wasn't for the connectivity issues they experienced I would have used the data I had paid for. Extremely disappointed. I have had 2 cell phone and 2 router contracts with Telkom and I am honestly disappointed and will probably not consider using them again in the future.