keep on suspending accout

As I said once again I am still sitting with the same ******** problem as before. I have given them my banking details on numerous occasions. I have told them to take the money off by debit order. they assured me it will go off like that. Once again they cut my line off for no payment and the debit order never went off as they promised. I am very disappointed in mnt and would never refer anyone to them. I am thinking of cancelling my contract with them and seeking legal advice to take them to the ombudsman.