breach of contract

I signed up for a 50gig contract and signed a debit order for not more than R900 a month.Telkom took about 3 months to get it running and I only received my wifi repeater and office 360 packages end of june.they didn't bill me then all of a sudden tried to bill me for two months making the debit order bounce,i was then cut off and now you want to charge me for connection fees.please read the contract that I signed you have breached the contract and I am going to cancel this servive if this is how you treat customers.if you had taken off the debit order when you should have the account would not have gone into arrears .you are at fault not me.