Client of 7 years

This is coming from a client of their for over 7 years. Disgusting service from absolute *******. Paid them, sent proof of payment, sent letter notifying them of my intent to vacate. Notified them as to when I would be coming, when I arrived (with a vehicle I had to rent) they tell me I cannot enter as they have not received payment even though I sent it the day before and sent them an email saying I was coming the next day to collect my things. This is to a client of over 7 years! I pray no one ever uses these ********* with their underhanded business practices