Assupol is ******* on collecting premiums,****** ******

I took out a funeral cover with this Assupol and stated very cleary that debit order should be on 26 as i get paid on that day. the first few months my debit ordes were going smooth on the agreed date the booom come 2018 late towards Jan 2019 my premiums are colleted on the 24th of each month and guess what i was never informed about the change.i have wriiten to Assupol all they do is write me stupid email saying they will get back to me and resolve the matter which they dont. I will be cancelling this policy and want all my premiums back.I rather take my cover to a company that respects me and my bank account and that knows when to debit as per agreed date