Telkom Airtime Transfer

I mistakenly bought a huge amount of airtime R500 for the wrong simcard. I wanted to buy for my LTE simcard which I use for work. I normally load airtime on that work simcard then convert it to data. But last night I loaded my telephone sim which is not for work. Tried transferring but the maximum is R100 I called their call centre this morning and they said they can't help I will have to transfer R100 a day. Well Telkom I have to work and I need data for that. My shift is starting tonight.