Quick to sell contract, but no joy in closing accounts

I received a call early October 2017 from Reddata about data contracts at good prices... as I use a lot of data, I agreed to the contract, however the next day, I received 4 emails from other companies with login ID and passwords. This had me very upset, as I took out a contract with Reddata and not with all these other suppliers as listed below:

REDDATA RD RESCUEBOX RD TECHTRACE RD PHONEBOX RD

I immediately started sending emails to cancel my contract which I was told can happen as it is a month to month contract. However, I got emails back requesting my ID number, which of cause no person in his/her right mind would respond to... within the next week I managed to find time to phone Reddata, who confirmed around the 21st that the contract was cancelled... However... at the end of the month... debit orders went off my account for all 4 the above listed companies. Reddata's was returned... After phoning I was told it would take a few weeks to process but the account was cancelled as the consultant could see on their system... End November... off goes the debit orders AGAIN... All 4 of them... After phoning, they have agreed on 11 December that the contract was cancelled, but on 21 November the week after agreeing, yet they still deduct funds AGAIN....I was told the exact same story as the previous time I phoned... We are now on 9 January, and I still haven't received my refunds. I managed to put a stop order on my bank account to stop further funds going off, but no one from Reddata seems to be doing anything to resolve my problem of funds being deducted which shouldn't.... or getting it refunded to me.