Exceptionally poor administration

Approximately 2 weeks ago, I called AVBOB to arrange for funeral cover. During the phone call, I gave all of my contact details, and I was promised that I would have a contract sent to me within 24 hours, after which I would have 5 days to cancel the contract if I wished to do so. After 3 days, I received an sms asking me to dial a number to confirm my contact details, which I did - I confirmed my email address as well. When I still didn't have a copy of my contract 5 days later, I once again called AVBOB, and had an incredibly rude call centre agent sighing loudly in my ear when I asked to speak to his supervisor. According to him, there wasn't an email address on record for me. I asked him where my contract had been sent to, and was told that it couldn't be sent as no email was on record (a flat out lie, based on the sms I received). When I asked why I didn't then just get a phone call from AVBOB, he couldn't answer me. I spoke to his supervisor, who promised to immediately send me the contract. I spelled my email address TWICE, and told him specifically to note that my name contains an 'f', not a 'ph'. After 2 more days, I received an sms stating that my contact details had been 'successfully updated' - to the WRONG email address. I called yesterday and asked to cancel my contract - I have no faith in a company that, after 2 weeks, still hasn't sent me my contract (what are you hiding?). I am worried that a company with such shockingly poor admin, will mess up my funeral arrangements badly - they have certainly not shown competence thus far. I was promised I would receive my proof of cancellation immediately - 24 hours later I am still waiting. MAY I PLEASE JUST CANCEL NOW? If you deduct a single payment from my bank account, I WILL SUE.