Bad service

Have insurance with them from last year December, the consultant told me they will deduct 1905,60 in january which is 1005,60 monthly instalment and 900 for administration,then In january they deducted 900 only. February they took 2200, i called and asked what was it for the lady told me its for two montly instalment and 200 o cant remember what she said was for, i told her but thata was not as per our agreement, can I make an arrangement to pay february instament in month end, she told me they dont make arrangement rather she cancel the policy then it will start deducting in March without any administration fee, I agreed in March they deducted right amount then come April they deduct 1905,60 I called again they told me its a mistake I should go to the bank and dispute, I did that and that Guy told me to call a day after to make an arrangement of which i did he told debit order will go off on Friday but till today it never did, I am trying to call their office now but there is no one picking the phone.