bad service

This company has decided to increase my deposit without my consent, saying its in there terms and conditions to increase my deposit, went check the contract I signed when I purchased the property the is nothing like that, asked them to send me the part were I signed I agreed to this. not responding to my emails. asked again to send me my meter reading so that i can take them to the municipality to see why is my electricity bill is so high and not response. They cut my electricity for 300 last month and had to pay R1000 for them to reconnect it. when i call the ladies I speak to are so rude to customers. if it was up to me I would want tshwane to be in-charge of my electricity. Im tied and been very patient with this company. in the middle of a month i get a bill to pay R4600 because they decided to increase my deposit for what i do not know as I own the property what would I do to risk my R650 000 department of a electrical bill. they not clear on why they did it all the rude lady said to me its in the T&C and in the contract I have the is no such. please assist me as I have also taken this to my lawyers and also to tshwane. im writing to consumer commission and the Public protector as I feel this is ******** and the was no communication made to me. the rude lady kept telling me if I do not pay this deposit they decided to increase without leting me know they will cut my electricity and I have a budget and did not budget for this. HELP ME PLEASE OR LEAD ME IN THE RIGHT DIRECTION.

regards