Unjustified fees on SSDA

My name is Seybil Barnardo. I have been trying to get to the bottom of all this for how long now.. First i was handed over from Wonga to SSDA, then they told me i was handed over to Nimble, who handed me over to SSDA again.. without any NOTIFICATION.. ive paid faithfully every month to Nimble, but i cannot even realy get hold of them.. I had to phone around and ask what is happening Now SSDA phones every day and if i have queries, they charge me for everything.... SSDA in the meantime adds fees that are more than the amount that i can afford. i dont know what to do anymore