Very disappointed

I have been a client of Teljoy for a few years, I bought a new item this January. The delivery was supposed to take pace on the thirtieth of January, only for the delivery company to tell me that Teljoy forgot to load the item, Teljoy even phoned me saying no it is coming that day, only to receive it the next day, but if I am looking correctly the pro-rata invoice I am being billed for the day it was supposed to be delivered but never got delivered on ? And the sms says no the amount is “as discussed with the agent who phoned me” NO ONE ever phoned me to discuss this !!??? Teljoy what is going on ?